{"id":7817,"date":"2020-11-10T11:03:03","date_gmt":"2020-11-10T11:03:03","guid":{"rendered":"https:\/\/blog.hostinger.io\/fr-tutoriels\/?p=7817"},"modified":"2026-04-27T18:50:56","modified_gmt":"2026-04-27T18:50:56","slug":"ssl-version-cipher-mismatch-erreur","status":"publish","type":"post","link":"\/fr\/tutoriels\/ssl-version-cipher-mismatch-erreur\/","title":{"rendered":"Comment corriger l&#8217;erreur ERR_SSL_VERSION_OR_CIPHER_MISMATCH ?"},"content":{"rendered":"<p class=\"wp-block-paragraph\">L&rsquo;erreur <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH <\/strong>se produit g&eacute;n&eacute;ralement lorsqu&rsquo;un navigateur web ne parvient pas &agrave; &eacute;tablir une connexion s&eacute;curis&eacute;e parce que les param&egrave;tres du protocole SSL\/TLS du site web sont obsol&egrave;tes ou incompatibles.<\/p><p class=\"wp-block-paragraph\">Ces protocoles sont importants pour le chiffrement des donn&eacute;es et la protection de la vie priv&eacute;e sur Internet. Il est important que les propri&eacute;taires de sites web et les visiteurs comprennent cette erreur, car elle a un impact sur la confiance des utilisateurs et l&rsquo;accessibilit&eacute; du site web.<\/p><p class=\"wp-block-paragraph\">Ce guide explique les causes de <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH <\/strong>et fournit des solutions &eacute;tape par &eacute;tape pour le r&eacute;soudre. &Agrave; la fin, vous saurez comment r&eacute;soudre ce probl&egrave;me et &eacute;viter qu&rsquo;il ne se reproduise, ce qui garantira une exp&eacute;rience de navigation fluide &agrave; vos visiteurs.<\/p><h2 class=\"wp-block-heading\" id=\"h-qu-est-ce-que-err-ssl-version-or-cipher-mismatch\">Qu&rsquo;est-ce que ERR_SSL_VERSION_OR_CIPHER_MISMATCH ?<\/h2><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec14548ff9\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec14548ff9\" class=\"aligncenter size-large wp-lightbox-container\"><img decoding=\"async\" width=\"1024\" height=\"545\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/google-chrome-err-ssl-version-or-cipher-mismatch-1536x817-1.png\/w=1024,h=1024,fit=scale-down\" alt=\"Le message d'erreur ERR_SSL_VERSION_OR_CIPHER_MISMATCH dans Google Chrome\" class=\"wp-image-40579\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/google-chrome-err-ssl-version-or-cipher-mismatch-1536x817-1.png\/w=1024,fit=scale-down 1024w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/google-chrome-err-ssl-version-or-cipher-mismatch-1536x817-1.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/google-chrome-err-ssl-version-or-cipher-mismatch-1536x817-1.png\/w=150,fit=scale-down 150w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/google-chrome-err-ssl-version-or-cipher-mismatch-1536x817-1.png\/w=768,fit=scale-down 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><p class=\"wp-block-paragraph\">L&rsquo;erreur <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH <\/strong>se produit g&eacute;n&eacute;ralement lorsqu&rsquo;un navigateur d&eacute;tecte que les param&egrave;tres du certificat ou du protocole <a href=\"https:\/\/www.hostinger.com\/fr\/tutoriels\/quest-ce-que-ssl-tls-et-https\/\">Secure Socket Layer (SSL)<\/a> d&rsquo;un site sont incorrects ou que la suite de chiffrement utilis&eacute;e est obsol&egrave;te.<\/p><p class=\"wp-block-paragraph\">Cette erreur est un moyen pour le navigateur de prot&eacute;ger les utilisateurs contre la visite de sites web potentiellement dangereux.<\/p><p class=\"wp-block-paragraph\">Les navigateurs web tels que <strong>Chrome<\/strong>, <strong>Edge <\/strong>et <strong>Safari <\/strong>v&eacute;rifient automatiquement la configuration SSL d&rsquo;un site pour s&rsquo;assurer qu&rsquo;il est s&eacute;curis&eacute;. Ce processus, connu sous le nom de handshake TLS (Transport Layer Security), &eacute;tablit une connexion l&eacute;gitime entre le navigateur et le serveur web.<\/p><p class=\"wp-block-paragraph\">Si l&rsquo;une des parties ne prend pas en charge une version du protocole SSL ou une suite de chiffrement standard lors du handshake, cela d&eacute;clenche <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH<\/strong>.<\/p><h2 class=\"wp-block-heading\" id=\"h-quelles-sont-les-causes-de-l-erreur-err-ssl-version-or-cipher-mismatch\">Quelles sont les causes de l&rsquo;erreur ERR_SSL_VERSION_OR_CIPHER_MISMATCH ?<\/h2><p class=\"wp-block-paragraph\">Le message d&rsquo;erreur <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH <\/strong>peut r&eacute;sulter de plusieurs causes possibles, telles que<\/p><ul class=\"wp-block-list\">\n<li><strong>Protocoles SSL\/TLS obsol&egrave;tes ou incompatibles<\/strong>. Si un serveur web utilise une version obsol&egrave;te du protocole SSL\/TLS, telle que SSL <strong>3.0 <\/strong>ou TLS <strong>1.0<\/strong>, il se peut qu&rsquo;elle ne soit pas prise en charge par les navigateurs web actuels, ce qui entra&icirc;ne cette erreur.<\/li>\n\n\n\n<li><strong>Nom de certificat expir&eacute; ou non correspondant<\/strong>. Si le certificat SSL du site web est attribu&eacute; &agrave; un nom de domaine diff&eacute;rent ou s&rsquo;il a expir&eacute;, le navigateur affichera un message d&rsquo;avertissement.<\/li>\n\n\n\n<li><strong>Mauvaise configuration du serveur web ou des param&egrave;tres CDN<\/strong>. Des configurations SSL incorrectes sur un serveur web ou un r&eacute;seau de diffusion de contenu (CDN), comme <strong>Cloudflare<\/strong>, peuvent emp&ecirc;cher une communication correcte entre le serveur et le navigateur.<\/li>\n\n\n\n<li><strong>Probl&egrave;mes de navigateur ou de cache<\/strong>. Les donn&eacute;es du cache du navigateur web peuvent contenir des informations SSL obsol&egrave;tes qui entrent en conflit avec les param&egrave;tres actuels d&rsquo;un site web.<\/li>\n\n\n\n<li><strong>Interf&eacute;rence d&rsquo;un antivirus ou d&rsquo;un pare-feu<\/strong>. Un pare-feu ou un logiciel antivirus sp&eacute;cifique peut bloquer les connexions s&eacute;curis&eacute;es en raison d&rsquo;une mauvaise configuration ou de faux positifs, ce qui provoque l&rsquo;apparition de l&rsquo;erreur.<\/li>\n<\/ul><h2 class=\"wp-block-heading\" id=\"h-comment-corriger-l-erreur-err-ssl-version-or-cipher-mismatch\">Comment corriger l&rsquo;erreur ERR_SSL_VERSION_OR_CIPHER_MISMATCH ?<\/h2><p class=\"wp-block-paragraph\">Voici quelques conseils de d&eacute;pannage pour r&eacute;soudre le probl&egrave;me <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH<\/strong>. Veuillez noter que les deux premi&egrave;res m&eacute;thodes sont destin&eacute;es aux propri&eacute;taires de sites web, tandis que les &eacute;tapes trois &agrave; six s&rsquo;appliquent &agrave; tout le monde, y compris aux utilisateurs finaux.<\/p><h3 class=\"wp-block-heading\" id=\"h-1-verifier-le-certificat-ssl-tls\">1. V&eacute;rifier le certificat SSL\/TLS<\/h3><p class=\"wp-block-paragraph\">La v&eacute;rification du certificat SSL\/TLS de votre site web est un excellent point de d&eacute;part pour r&eacute;soudre l&rsquo;erreur <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH<\/strong>. Voici comment v&eacute;rifier les probl&egrave;mes de configuration SSL :<\/p><p class=\"wp-block-paragraph\"><strong>V&eacute;rification de la validit&eacute; du certificat SSL<\/strong><\/p><p class=\"wp-block-paragraph\">Pour d&eacute;terminer si votre certificat SSL est toujours valide et &agrave; jour, utilisez des outils en ligne tels que <strong>Qualys SSL Labs<\/strong>. Cet outil fournit un rapport complet sur vos param&egrave;tres SSL, mettant en &eacute;vidence tout probl&egrave;me susceptible de provoquer des erreurs. Proc&eacute;dez comme suit :<\/p><ol class=\"wp-block-list\">\n<li>Acc&eacute;dez &agrave; la page <a href=\"https:\/\/www.ssllabs.com\/ssltest\/index.html\" target=\"_blank\" rel=\"noopener\">Qualys SSL Server Test<\/a>.<\/li>\n\n\n\n<li>Saisissez l&rsquo;URL de votre site web et cliquez sur <strong>Submit<\/strong>.<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec14549f57\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec14549f57\" class=\"aligncenter size-full wp-lightbox-container\"><img decoding=\"async\" width=\"1024\" height=\"378\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Qualys-SSL-Labs-page-d-accueil.png\/public\" alt=\"Page du test de serveur SSL de Qualys SSL Labs\" class=\"wp-image-40580\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Qualys-SSL-Labs-page-d-accueil.png\/w=1024,fit=scale-down 1024w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Qualys-SSL-Labs-page-d-accueil.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Qualys-SSL-Labs-page-d-accueil.png\/w=150,fit=scale-down 150w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Qualys-SSL-Labs-page-d-accueil.png\/w=768,fit=scale-down 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><ol start=\"3\" class=\"wp-block-list\">\n<li>Attendez que l&rsquo;outil analyse votre site. Il attribuera une note &agrave; votre connexion SSL et identifiera les probl&egrave;mes &eacute;ventuels, tels qu&rsquo;un certificat SSL expir&eacute; ou une prise en charge insuffisante du protocole.<\/li>\n\n\n\n<li>Examinez les r&eacute;sultats pour v&eacute;rifier si votre certificat SSL est valide, correctement &eacute;mis et pris en charge par les navigateurs actuels. Si le certificat est expir&eacute; ou non valide, vous devrez le renouveler ou le remplacer.<\/li>\n<\/ol><p class=\"wp-block-paragraph\"><strong>Comprendre le rapport de Qualys SSL Labs<\/strong><\/p><p class=\"wp-block-paragraph\">Pour corriger efficacement <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH<\/strong>, vous devez comprendre les r&eacute;sultats fournis par Qualys. Voici quatre probl&egrave;mes courants qui peuvent appara&icirc;tre dans le rapport :<\/p><ul class=\"wp-block-list\">\n<li><strong>Inad&eacute;quation du nom du certificat SSL<\/strong>. Cela se produit lorsque le nom de domaine dans le certificat SSL ne correspond pas &agrave; l&rsquo;URL accessible dans le navigateur. Qualys SSL Labs d&eacute;tecte cette incoh&eacute;rence et l&rsquo;indique dans son rapport.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec1454aa78\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec1454aa78\" class=\"aligncenter size-full wp-lightbox-container\"><img decoding=\"async\" width=\"1024\" height=\"339\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/SSL-report-mismatch-1024x339-1.png\/public\" alt=\"Le r&eacute;sultat &laquo; Certificat name mismatch &raquo; dans la page Rapport SSL de Qualys\" class=\"wp-image-40581\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/SSL-report-mismatch-1024x339-1.png\/w=1024,fit=scale-down 1024w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/SSL-report-mismatch-1024x339-1.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/SSL-report-mismatch-1024x339-1.png\/w=150,fit=scale-down 150w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/SSL-report-mismatch-1024x339-1.png\/w=768,fit=scale-down 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><ul class=\"wp-block-list\">\n<li><strong>Certificat SSL non valide<\/strong>. Cela se produit lorsque le certificat a expir&eacute;, qu&rsquo;il n&rsquo;a pas &eacute;t&eacute; &eacute;mis par une autorit&eacute; de certification fiable ou qu&rsquo;il a &eacute;t&eacute; mal install&eacute;. Dans ce cas, vous devez mettre &agrave; jour ou r&eacute;installer le certificat.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec1454b65f\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec1454b65f\" class=\"aligncenter size-full wp-lightbox-container\"><img decoding=\"async\" width=\"746\" height=\"400\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/rating-T.png\/public\" alt=\"Le message &laquo; Le certificat de ce serveur n'est pas fiable &raquo; s'affiche dans la page Rapport SSL de Qualys.\" class=\"wp-image-40582\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/rating-T.png\/w=746,fit=scale-down 746w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/rating-T.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/rating-T.png\/w=150,fit=scale-down 150w\" sizes=\"(max-width: 746px) 100vw, 746px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><ul class=\"wp-block-list\">\n<li><strong>Suite de chiffrement RC4<\/strong>. Le test SSL Labs v&eacute;rifie la suite de chiffrement actuelle du serveur. S&rsquo;il utilise toujours la suite de chiffrement <strong>RC4<\/strong>, consid&eacute;r&eacute;e comme non s&eacute;curis&eacute;e, le rapport le signalera. Mettez &agrave; jour la configuration de votre serveur pour d&eacute;sactiver <strong>RC4 <\/strong>et utiliser une suite de chiffrement s&eacute;curis&eacute;e &agrave; la place.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec1454c137\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec1454c137\" class=\"aligncenter size-full wp-lightbox-container\"><img decoding=\"async\" width=\"742\" height=\"405\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/rating-F-cipher.png\/public\" alt=\"Le message &laquo; Ce serveur accepte le chiffrement RC4, mais uniquement avec les protocoles plus anciens &raquo; s'affiche dans la page Rapport SSL de Qualys.\" class=\"wp-image-40583\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/rating-F-cipher.png\/w=742,fit=scale-down 742w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/rating-F-cipher.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/rating-F-cipher.png\/w=150,fit=scale-down 150w\" sizes=\"(max-width: 742px) 100vw, 742px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><ul class=\"wp-block-list\">\n<li><strong>Ancienne version de TLS<\/strong>. L&rsquo;outil identifie &eacute;galement la version actuelle de TLS utilis&eacute;e par votre site web. Il doit s&rsquo;agir au minimum de TLS <strong>1.2<\/strong>, car les navigateurs actuels ne prennent plus en charge les versions plus anciennes telles que TLS <strong>1.0 <\/strong>et TLS <strong>1.1<\/strong>. Si votre site utilise toujours une version obsol&egrave;te, contactez votre h&eacute;bergeur pour qu&rsquo;il mette &agrave; jour la version de TLS.<\/li>\n<\/ul><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec1454caf6\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec1454caf6\" class=\"aligncenter size-full wp-lightbox-container\"><img decoding=\"async\" width=\"743\" height=\"414\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/rating-F-TLS.png\/public\" alt=\"Le r&eacute;sultat &laquo; Ce serveur supporte TLS 1.0 et TLS 1.1 &raquo; s'affiche dans la page Rapport SSL de Qualys.\" class=\"wp-image-40584\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/rating-F-TLS.png\/w=743,fit=scale-down 743w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/rating-F-TLS.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/rating-F-TLS.png\/w=150,fit=scale-down 150w\" sizes=\"(max-width: 743px) 100vw, 743px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><p class=\"wp-block-paragraph\"><strong>Recherche d&rsquo;un nom de certificat non correspondant<\/strong><\/p><p class=\"wp-block-paragraph\">Si l&rsquo;outil Qualys SSL Labs d&eacute;tecte une incoh&eacute;rence dans le certificat SSL, utilisez <strong>Google Chrome DevTools <\/strong>pour confirmer quels noms de domaine sont couverts par votre certificat. Voici comment proc&eacute;der :<\/p><ol class=\"wp-block-list\">\n<li>Cliquez avec le bouton droit de la souris n&rsquo;importe o&ugrave; dans un onglet Chrome et s&eacute;lectionnez <strong>Inspecter<\/strong>.<\/li>\n\n\n\n<li>Allez sur<strong> Confidentialit&eacute; et s&eacute;curit&eacute;<\/strong> &rarr; <strong>Afficher le certificat <\/strong>pour voir les informations sur le certificat.<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec1454d4af\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec1454d4af\" class=\"aligncenter size-full wp-lightbox-container\"><img decoding=\"async\" width=\"692\" height=\"555\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/afficher-le-certificat-05-22-2025_08_12_PM.png\/public\" alt=\"Le bouton &laquo; Afficher le certificat &raquo; sous l'onglet &laquo; S&eacute;curit&eacute; &raquo; dans Google Chrome\" class=\"wp-image-40585\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/afficher-le-certificat-05-22-2025_08_12_PM.png\/w=692,fit=scale-down 692w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/afficher-le-certificat-05-22-2025_08_12_PM.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/afficher-le-certificat-05-22-2025_08_12_PM.png\/w=150,fit=scale-down 150w\" sizes=\"(max-width: 692px) 100vw, 692px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><ol start=\"3\" class=\"wp-block-list\">\n<li>Dans la fen&ecirc;tre du certificat, naviguez vers <strong>D&eacute;tails<\/strong> &rarr; <strong>Autre nom de l&rsquo;objet du certificat<\/strong>. Ceci affichera tous les noms de domaine couverts par le certificat.<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec1454dd73\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec1454dd73\" class=\"aligncenter size-full wp-lightbox-container\"><img decoding=\"async\" width=\"676\" height=\"840\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/details-certificat-ssl-05-22-2025_08_18_PM.png\/public\" alt=\"Le champ &laquo; Autre nom de l'objet du certificat &raquo; de Google \" class=\"wp-image-40586\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/details-certificat-ssl-05-22-2025_08_18_PM.png\/w=676,fit=scale-down 676w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/details-certificat-ssl-05-22-2025_08_18_PM.png\/w=241,fit=scale-down 241w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/details-certificat-ssl-05-22-2025_08_18_PM.png\/w=121,fit=scale-down 121w\" sizes=\"(max-width: 676px) 100vw, 676px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><ol start=\"4\" class=\"wp-block-list\">\n<li>Examinez la liste des noms de domaine pour vous assurer qu&rsquo;ils correspondent &agrave; l&rsquo;URL consult&eacute;e. En cas de divergence, <a href=\"https:\/\/www.hostinger.com\/fr\/tutoriels\/redirection-non-www-vers-www\/\">redirigez le trafic<\/a> vers le bon domaine ou utilisez un certificat wildcard couvrant plusieurs sous-domaines.<\/li>\n<\/ol><h3 class=\"wp-block-heading\" id=\"h-2-reconfigurer-les-parametres-ssl\">2. Reconfigurer les param&egrave;tres SSL<\/h3><p class=\"wp-block-paragraph\">La reconfiguration des param&egrave;tres SSL peut r&eacute;soudre le probl&egrave;me <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH <\/strong>si des configurations incorrectes en sont la cause. Voici comment proc&eacute;der sur des services tels que Hostinger et Cloudflare :<\/p><p class=\"wp-block-paragraph\"><strong>Reconfiguration des param&egrave;tres SSL sur Hostinger pour Lifetime SSL<\/strong><\/p><p class=\"wp-block-paragraph\">Hostinger offre un certificat SSL gratuit de Lifetime SSL pour tous nos plans d&rsquo;<a href=\"https:\/\/www.hostinger.com\/fr\/hebergement-web\">h&eacute;bergement web<\/a>. Vous pouvez mettre &agrave; jour les param&egrave;tres SSL via hPanel en suivant les instructions ci-dessous :<\/p><ol class=\"wp-block-list\">\n<li>Connectez-vous &agrave; <a href=\"https:\/\/www.hostinger.com\/fr\/tutoriels\/hpanel-hostinger\/\">hPanel<\/a> en utilisant votre compte Hostinger.<\/li>\n\n\n\n<li>Allez dans <strong>Sites web &rarr; Tableau de bord<\/strong>.<\/li>\n\n\n\n<li>Dans la barre lat&eacute;rale gauche, s&eacute;lectionnez <strong>S&eacute;curit&eacute; &rarr; SSL<\/strong>.<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"211\" height=\"268\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/onglet-ssl-hpanel.png\/public\" alt=\"Le menu SSL dans hPanel\" class=\"wp-image-40587\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/onglet-ssl-hpanel.png\/w=211,fit=scale-down 211w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/onglet-ssl-hpanel.png\/w=118,fit=scale-down 118w\" sizes=\"(max-width: 211px) 100vw, 211px\" \/><\/figure>\n<\/div><ol start=\"4\" class=\"wp-block-list\">\n<li>Cliquez sur le <strong>menu &agrave; trois points <\/strong>et s&eacute;lectionnez <strong>D&eacute;sinstaller<\/strong>.<\/li>\n<\/ol><figure data-wp-context='{\"imageId\":\"6a6ec1454f989\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec1454f989\" class=\"wp-block-image size-large wp-lightbox-container\"><img decoding=\"async\" width=\"1138\" height=\"385\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Certificat-SSL-Hostinger-05-22-2025_08_23_PM.png\/w=1024,h=1024,fit=scale-down\" alt=\"L'option D&eacute;sinstaller dans la page du certificat SSL de hPanel\" class=\"wp-image-40588\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Certificat-SSL-Hostinger-05-22-2025_08_23_PM.png\/w=1138,fit=scale-down 1138w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Certificat-SSL-Hostinger-05-22-2025_08_23_PM.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Certificat-SSL-Hostinger-05-22-2025_08_23_PM.png\/w=1024,fit=scale-down 1024w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Certificat-SSL-Hostinger-05-22-2025_08_23_PM.png\/w=150,fit=scale-down 150w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Certificat-SSL-Hostinger-05-22-2025_08_23_PM.png\/w=768,fit=scale-down 768w\" sizes=\"(max-width: 1138px) 100vw, 1138px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure><ol start=\"5\" class=\"wp-block-list\">\n<li>R&eacute;activez le SSL en s&eacute;lectionnant le nom de domaine et en cliquant sur <strong>Installer SSL<\/strong>.<\/li>\n\n\n\n<li>Attendez que le SSL soit activ&eacute; pour votre domaine. Une fois que c&rsquo;est fait, cliquez &agrave; nouveau sur le <strong>menu &agrave; trois points <\/strong>et s&eacute;lectionnez <strong>Forcer HTTPS <\/strong>pour vous assurer que tout le trafic est redirig&eacute; de mani&egrave;re s&eacute;curis&eacute;e.<\/li>\n\n\n\n<li>Allez dans <strong>Avanc&eacute; &rarr; Gestionnaire de cache <\/strong>et cliquez sur <strong>Purger tout <\/strong>pour effacer toutes les donn&eacute;es mises en cache qui pointent vers l&rsquo;ancienne configuration SSL.<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec14550598\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec14550598\" class=\"aligncenter size-large wp-lightbox-container\"><img decoding=\"async\" width=\"1145\" height=\"490\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Gestionnaire-de-cache-Hostinger-05-22-2025_08_26_PM-1.png\/w=1024,h=1024,fit=scale-down\" alt=\"Le bouton Purger tout dans la page Gestionnaire de cache de hPanel\" class=\"wp-image-40590\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Gestionnaire-de-cache-Hostinger-05-22-2025_08_26_PM-1.png\/w=1145,fit=scale-down 1145w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Gestionnaire-de-cache-Hostinger-05-22-2025_08_26_PM-1.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Gestionnaire-de-cache-Hostinger-05-22-2025_08_26_PM-1.png\/w=1024,fit=scale-down 1024w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Gestionnaire-de-cache-Hostinger-05-22-2025_08_26_PM-1.png\/w=150,fit=scale-down 150w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Gestionnaire-de-cache-Hostinger-05-22-2025_08_26_PM-1.png\/w=768,fit=scale-down 768w\" sizes=\"(max-width: 1145px) 100vw, 1145px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.hostinger.com\/fr\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" width=\"1024\" height=\"300\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2022\/12\/FR-Web-hosting_in-text-banner-1-1024x300-1.png\/public\" alt=\"\" class=\"wp-image-41467\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2022\/12\/FR-Web-hosting_in-text-banner-1-1024x300-1.png\/w=1024,fit=scale-down 1024w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2022\/12\/FR-Web-hosting_in-text-banner-1-1024x300-1.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2022\/12\/FR-Web-hosting_in-text-banner-1-1024x300-1.png\/w=150,fit=scale-down 150w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2022\/12\/FR-Web-hosting_in-text-banner-1-1024x300-1.png\/w=768,fit=scale-down 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><p class=\"wp-block-paragraph\"><strong>Reconfiguration des param&egrave;tres SSL via Cloudflare pour SSL universal<\/strong><\/p><p class=\"wp-block-paragraph\">Si vous utilisez le SSL universal de Cloudflare, vous devez ajuster les param&egrave;tres SSL via son tableau de bord. Voici comment proc&eacute;der :<\/p><ol class=\"wp-block-list\">\n<li>Connectez-vous &agrave; votre <a href=\"https:\/\/dash.cloudflare.com\/login\" target=\"_blank\" rel=\"noopener\">tableau de bord Cloudflare<\/a>.<\/li>\n\n\n\n<li>S&eacute;lectionnez <strong>SSL\/TLS <\/strong>dans le menu sup&eacute;rieur du tableau de bord.<\/li>\n<\/ol><figure data-wp-context='{\"imageId\":\"6a6ec14551aae\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec14551aae\" class=\"wp-block-image size-full wp-lightbox-container\"><img decoding=\"async\" width=\"1024\" height=\"113\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/SSL-TLS-1024x113-1.png\/public\" alt=\"Le menu SSL\/TLS dans le tableau de bord Cloudflare\" class=\"wp-image-40591\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/SSL-TLS-1024x113-1.png\/w=1024,fit=scale-down 1024w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/SSL-TLS-1024x113-1.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/SSL-TLS-1024x113-1.png\/w=150,fit=scale-down 150w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/SSL-TLS-1024x113-1.png\/w=768,fit=scale-down 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure><ol start=\"3\" class=\"wp-block-list\">\n<li>Allez dans l&rsquo;onglet <strong>Certificats Edge.<\/strong><\/li>\n\n\n\n<li>Faites d&eacute;filer vers le bas et trouvez le bouton <strong>D&eacute;sactiver SSL universal <\/strong>pour d&eacute;sactiver le SSL.<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec14552388\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec14552388\" class=\"aligncenter size-full wp-lightbox-container\"><img decoding=\"async\" width=\"1024\" height=\"241\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/desactiver-ssl-universel.png\/public\" alt=\"Le bouton &laquo; D&eacute;sactiver SSL universel &raquo; dans le tableau de bord Cloudflare\" class=\"wp-image-40592\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/desactiver-ssl-universel.png\/w=1024,fit=scale-down 1024w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/desactiver-ssl-universel.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/desactiver-ssl-universel.png\/w=150,fit=scale-down 150w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/desactiver-ssl-universel.png\/w=768,fit=scale-down 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><ol start=\"5\" class=\"wp-block-list\">\n<li>Attendez quelques minutes que le processus se termine, puis cliquez sur <strong>Activer SSL universal <\/strong>pour le r&eacute;activer.<\/li>\n\n\n\n<li>Retournez dans le panneau sup&eacute;rieur et s&eacute;lectionnez <strong>Mise en cache<\/strong>.<\/li>\n\n\n\n<li>Naviguez vers <strong>Configuration &rarr; Purger le cache &rarr; Purger tout <\/strong>pour effacer le cache.<\/li>\n<\/ol><figure data-wp-context='{\"imageId\":\"6a6ec14552ccc\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec14552ccc\" class=\"wp-block-image size-full wp-lightbox-container\"><img decoding=\"async\" width=\"1024\" height=\"350\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/purger-tout-1024x350-1.png\/public\" alt=\"Le bouton Tout purger dans la section Purger le cache du tableau de bord Cloudflare\" class=\"wp-image-40593\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/purger-tout-1024x350-1.png\/w=1024,fit=scale-down 1024w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/purger-tout-1024x350-1.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/purger-tout-1024x350-1.png\/w=150,fit=scale-down 150w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/purger-tout-1024x350-1.png\/w=768,fit=scale-down 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure><p class=\"wp-block-paragraph\">Quel que soit le service, attendez quelques minutes apr&egrave;s avoir effectu&eacute; ces &eacute;tapes. Revenez ensuite sur votre site web pour voir si le probl&egrave;me a &eacute;t&eacute; r&eacute;solu.<\/p><h3 class=\"wp-block-heading\" id=\"h-3-activer-le-dernier-support-tls\">3. Activer le dernier support TLS<\/h3><p class=\"wp-block-paragraph\">L&rsquo;activation de la derni&egrave;re version de TLS dans votre navigateur peut aider &agrave; r&eacute;soudre le probl&egrave;me <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH<\/strong>. La version la plus r&eacute;cente, TLS <strong>1.3<\/strong>, est largement support&eacute;e par les navigateurs actuels.<\/p><p class=\"wp-block-paragraph\">Toutefois, dans certains cas, il peut &ecirc;tre n&eacute;cessaire d&rsquo;activer des versions TLS plus anciennes &agrave; des fins de test. Voici comment g&eacute;rer la prise en charge de TLS par les navigateurs :<\/p><p class=\"wp-block-paragraph\"><strong>Activation de TLS 1.3 pour les anciennes versions de navigateurs<\/strong><\/p><p class=\"wp-block-paragraph\">La plupart des navigateurs, y compris Google Chrome, prennent en charge TLS <strong>1.3 <\/strong>par d&eacute;faut. Toutefois, si vous utilisez une ancienne version de Chrome, vous devrez peut-&ecirc;tre l&rsquo;activer manuellement :<\/p><ol class=\"wp-block-list\">\n<li>Ouvrez Chrome et entrez <strong>chrome:\/\/flags <\/strong>dans la barre d&rsquo;adresse.<\/li>\n\n\n\n<li>Dans le champ de recherche, tapez <strong>TLS<\/strong>.<\/li>\n\n\n\n<li>Recherchez les options <strong>TLS 1.3 <\/strong>et r&eacute;glez-les sur <strong>Enabled<\/strong>.<\/li>\n<\/ol><figure data-wp-context='{\"imageId\":\"6a6ec14553c3a\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec14553c3a\" class=\"wp-block-image size-large wp-lightbox-container\"><img decoding=\"async\" width=\"1024\" height=\"474\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Experiments-05-22-2025_08_45_PM.png\/w=1024,h=1024,fit=scale-down\" alt=\"Les options TLS 1.3 dans la page Exp&eacute;riences de Google Chrome\" class=\"wp-image-40594\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Experiments-05-22-2025_08_45_PM.png\/w=1024,fit=scale-down 1024w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Experiments-05-22-2025_08_45_PM.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Experiments-05-22-2025_08_45_PM.png\/w=150,fit=scale-down 150w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Experiments-05-22-2025_08_45_PM.png\/w=768,fit=scale-down 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure><ol start=\"4\" class=\"wp-block-list\">\n<li>Cliquez sur <strong>Relancer <\/strong>pour red&eacute;marrer Chrome et vous assurer que les modifications sont prises en compte.<\/li>\n<\/ol><p class=\"wp-block-paragraph\"><strong>Activation des anciennes versions de TLS<\/strong><\/p><p class=\"wp-block-paragraph\">Il est parfois n&eacute;cessaire de v&eacute;rifier si les anciennes versions de TLS, telles que TLS <strong>1.0 <\/strong>ou <strong>1.1<\/strong>, provoquent <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH<\/strong>. Bien qu&rsquo;il ne soit pas recommand&eacute; de conserver ces param&egrave;tres, vous pouvez activer temporairement ces protocoles plus anciens.<\/p><p class=\"wp-block-paragraph\">Pour les utilisateurs de Chrome, voici comment proc&eacute;der :<\/p><ol class=\"wp-block-list\">\n<li>Tapez <strong>chrome:\/\/flags <\/strong>dans la barre d&rsquo;adresse et appuyez sur <strong>Entr&eacute;e<\/strong>.<\/li>\n\n\n\n<li>Recherchez <strong>TLS <\/strong>dans le champ d&eacute;sign&eacute;.<\/li>\n\n\n\n<li>Trouvez <strong>Enforce deprecation of legacy TLS versions <\/strong>et r&eacute;glez-le sur <strong>Disabled<\/strong>.<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec14554713\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec14554713\" class=\"aligncenter size-full wp-lightbox-container\"><img decoding=\"async\" width=\"742\" height=\"322\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/chrome-TLS.png\/public\" alt=\"L'option &laquo; Appliquer la d&eacute;pr&eacute;ciation des versions TLS obsol&egrave;tes &raquo; dans la page Exp&eacute;riences de Google Chrome\" class=\"wp-image-40595\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/chrome-TLS.png\/w=742,fit=scale-down 742w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/chrome-TLS.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/chrome-TLS.png\/w=150,fit=scale-down 150w\" sizes=\"(max-width: 742px) 100vw, 742px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><ol start=\"4\" class=\"wp-block-list\">\n<li>Red&eacute;marrez Chrome pour appliquer les modifications.<\/li>\n<\/ol><p class=\"wp-block-paragraph\">Si vous utilisez Windows, vous pouvez &eacute;galement activer toutes les versions de TLS sur votre syst&egrave;me en proc&eacute;dant comme suit :<\/p><ol class=\"wp-block-list\">\n<li>Allez dans <strong>Panneau de configuration &rarr; Centre r&eacute;seau et partage &rarr; Options Internet<\/strong>.<\/li>\n\n\n\n<li>S&eacute;lectionnez l&rsquo;onglet <strong>Avanc&eacute; <\/strong>et cochez les cases <strong>TLS 1.0<\/strong>, <strong>Utiliser TLS 1.1<\/strong>, <strong>Utiliser TLS 1.2 <\/strong>et <strong>Utiliser TLS 1.3<\/strong>.<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec14555186\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec14555186\" class=\"aligncenter size-full wp-lightbox-container\"><img decoding=\"async\" width=\"563\" height=\"655\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/proprietes-internet-05-22-2025_08_51_PM.png\/public\" alt=\"Les cases &agrave; cocher de la version TLS sous l'onglet Avanc&eacute; dans les param&egrave;tres Propri&eacute;t&eacute;s Internet de Windows\" class=\"wp-image-40596\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/proprietes-internet-05-22-2025_08_51_PM.png\/w=563,fit=scale-down 563w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/proprietes-internet-05-22-2025_08_51_PM.png\/w=258,fit=scale-down 258w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/proprietes-internet-05-22-2025_08_51_PM.png\/w=129,fit=scale-down 129w\" sizes=\"(max-width: 563px) 100vw, 563px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><ol start=\"3\" class=\"wp-block-list\">\n<li>Cliquez sur <strong>OK <\/strong>pour enregistrer votre configuration.<\/li>\n<\/ol><p>\n\n\n    <div class=\"announcement-block announcement-block--warning\">\n        <span class=\"announcement-block__heading\">\n            <svg width=\"24\" height=\"26\" viewBox=\"0 0 24 26\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                <path fill-rule=\"evenodd\" clip-rule=\"evenodd\"\n                d=\"M12 23.5C17.799 23.5 22.5 18.799 22.5 13C22.5 7.20101 17.799 2.5 12 2.5C6.20101 2.5 1.5 7.20101 1.5 13C1.5 18.799 6.20101 23.5 12 23.5ZM13.637 8.65198C13.637 7.74791 12.9041 7.01501 12 7.01501C11.0959 7.01501 10.363 7.74791 10.363 8.65198C10.5335 10.5375 10.875 14.383 10.875 14.383C10.875 15.0043 11.3787 15.508 12 15.508C12.6213 15.508 13.125 15.0043 13.125 14.383V14.38L13.637 8.65198ZM11.9927 16.714C11.3714 16.714 10.8677 17.2177 10.8677 17.839C10.8677 18.4603 11.3714 18.964 11.9927 18.964H12.0073C12.6286 18.964 13.1323 18.4603 13.1323 17.839C13.1323 17.2177 12.6286 16.714 12.0073 16.714H11.9927Z\"\n                fill=\"#BE1025\"\/>\n            <\/svg>\n            Warning        <\/span>\n        <p class=\"announcement-block__content\">\n            <strong>Avertissement !<\/strong> Vous ne devez activer les anciennes versions TLS que temporairement &agrave; des fins de test. Le fait de conserver ces param&egrave;tres activ&eacute;s n'est pas s&ucirc;r pour une navigation normale, car les versions ant&eacute;rieures ne sont plus prises en charge et peuvent vous exposer &agrave; des vuln&eacute;rabilit&eacute;s.        <\/p>\n    <\/div>\n\n    \n\n\n\n<\/p><h3 class=\"wp-block-heading\" id=\"h-4-desactiver-le-protocole-quic\">4. D&eacute;sactiver le protocole QUIC<\/h3><p class=\"wp-block-paragraph\">Le protocole QUIC (Quick UDP Internet Connection) est un projet exp&eacute;rimental d&eacute;velopp&eacute; par Google pour am&eacute;liorer la vitesse et la fiabilit&eacute; des applications web utilisant le protocole UDP (User Datagram Protocol).<\/p><p class=\"wp-block-paragraph\">Bien que QUIC puisse &ecirc;tre une alternative efficace aux solutions de s&eacute;curit&eacute; bien connues comme TCP, HTTP\/2 et TLS\/SSL, il peut parfois provoquer des erreurs SSL comme <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH<\/strong>.<\/p><p class=\"wp-block-paragraph\">La d&eacute;sactivation du protocole QUIC dans votre navigateur peut aider &agrave; r&eacute;soudre ce probl&egrave;me. Voici les &eacute;tapes &agrave; suivre pour Google Chrome :<\/p><ol class=\"wp-block-list\">\n<li>Allez sur <strong>chrome:\/\/flags <\/strong>et recherchez <strong>QUIC<\/strong>.<\/li>\n\n\n\n<li>Modifiez la valeur de <strong>Experimental&nbsp;QUIC&nbsp;protocol <\/strong>pour qu&rsquo;elle soit <strong>Disabled<\/strong>.<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec14555e28\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec14555e28\" class=\"aligncenter size-full wp-lightbox-container\"><img decoding=\"async\" width=\"1025\" height=\"475\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Experiments-05-22-2025_08_54_PM.png\/public\" alt=\"Exp&eacute;rience Google Chrome d&eacute;sactiv&eacute;e\" class=\"wp-image-40597\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Experiments-05-22-2025_08_54_PM.png\/w=1025,fit=scale-down 1025w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Experiments-05-22-2025_08_54_PM.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Experiments-05-22-2025_08_54_PM.png\/w=150,fit=scale-down 150w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/Experiments-05-22-2025_08_54_PM.png\/w=768,fit=scale-down 768w\" sizes=\"(max-width: 1025px) 100vw, 1025px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><ol start=\"3\" class=\"wp-block-list\">\n<li>Red&eacute;marrez le navigateur web.<\/li>\n<\/ol><h3 class=\"wp-block-heading\" id=\"h-5-effacer-l-historique-et-le-cache-de-votre-site-web\">5. Effacer l&rsquo;historique et le cache de votre site web<\/h3><p class=\"wp-block-paragraph\">Le cache de votre navigateur stocke des donn&eacute;es telles que du texte, des images et des fichiers provenant de sites web que vous avez visit&eacute;s pr&eacute;c&eacute;demment, ce qui leur permet de se charger plus rapidement lors de vos prochaines visites.<\/p><p class=\"wp-block-paragraph\">Toutefois, si un site web met &agrave; jour son certificat SSL ou ses param&egrave;tres, le cache peut devenir obsol&egrave;te, ce qui entra&icirc;ne des probl&egrave;mes tels que <strong>ERR_SSL_VERSION_OU_CIPHER_MISMATCH<\/strong>. La <a href=\"\/fr\/tutoriels\/vider-cache\/\">suppression du cache de votre navigateur<\/a> peut aider &agrave; r&eacute;soudre ces probl&egrave;mes.<\/p><p class=\"wp-block-paragraph\">Voici un guide pour les utilisateurs de Google Chrome :<\/p><ol class=\"wp-block-list\">\n<li>Cliquez sur le <strong>menu &agrave; trois points <\/strong>dans le coin sup&eacute;rieur droit et s&eacute;lectionnez<strong> Supprimer les donn&eacute;es de navigation<\/strong>.<\/li>\n\n\n\n<li>Dans la fen&ecirc;tre contextuelle, s&eacute;lectionnez la p&eacute;riode de suppression, par exemple <strong>Depuis le d&eacute;but<\/strong>.<\/li>\n\n\n\n<li>Cochez l&rsquo;option <strong>Images et fichiers en cache.<\/strong> Vous pouvez &eacute;galement s&eacute;lectionner d&rsquo;autres options si n&eacute;cessaire.<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec145569cb\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec145569cb\" class=\"aligncenter size-full wp-lightbox-container\"><img decoding=\"async\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/www.hostinger.com\/fr\/tutoriels\/wp-content\/uploads\/sites\/46\/2020\/11\/Parametres-%E2%80%93-Confidentialite-et-securite-05-22-2025_08_57_PM.png\" alt=\"Images et fichiers en cache sous la fen&ecirc;tre Supprimer les donn&eacute;es de navigation de Google Chrome\" class=\"wp-image-40598\"><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><ol start=\"5\" class=\"wp-block-list\">\n<li>Cliquez sur <strong>Supprimer les donn&eacute;es<\/strong>.<\/li>\n<\/ol><p class=\"wp-block-paragraph\">Ensuite, essayez de revisiter le site web. Si l&rsquo;erreur persiste, envisagez d&rsquo;effacer l&rsquo;&eacute;tat SSL. Veuillez noter que cette option n&rsquo;est disponible que sous Windows :<\/p><ol class=\"wp-block-list\">\n<li>Naviguez vers <strong>Panneau de configuration &rarr; Centre r&eacute;seau et partage &rarr; Options Internet<\/strong>.<\/li>\n\n\n\n<li>Sous l&rsquo;onglet <strong>Contenu<\/strong>, cliquez sur <strong>Effacer l&rsquo;&eacute;tat de SSL<\/strong>.<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec1455774d\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec1455774d\" class=\"aligncenter size-full wp-lightbox-container\"><img decoding=\"async\" width=\"562\" height=\"655\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/effacer-etat-ssl1-05-22-2025_09_00_PM.png\/public\" alt=\"Le bouton &laquo; Effacer l'&eacute;tat SSL &raquo; sous l'onglet &laquo; Contenu &raquo; dans les param&egrave;tres &laquo; Options Internet &raquo; de Windows.\" class=\"wp-image-40599\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/effacer-etat-ssl1-05-22-2025_09_00_PM.png\/w=562,fit=scale-down 562w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/effacer-etat-ssl1-05-22-2025_09_00_PM.png\/w=257,fit=scale-down 257w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/effacer-etat-ssl1-05-22-2025_09_00_PM.png\/w=129,fit=scale-down 129w\" sizes=\"(max-width: 562px) 100vw, 562px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><ol start=\"3\" class=\"wp-block-list\">\n<li>Cliquez sur <strong>OK<\/strong>.<\/li>\n<\/ol><h3 class=\"wp-block-heading\" id=\"h-6-examiner-les-parametres-de-l-antivirus-et-du-pare-feu\">6. Examiner les param&egrave;tres de l&rsquo;antivirus et du pare-feu<\/h3><p class=\"wp-block-paragraph\">Parfois, votre logiciel antivirus ou les param&egrave;tres de votre pare-feu peuvent bloquer les connexions s&eacute;curis&eacute;es, ce qui entra&icirc;ne des probl&egrave;mes tels que <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH<\/strong>. Une mauvaise configuration ou les certificats SSL du logiciel peuvent provoquer de fausses alertes, signalant des sites web s&ucirc;rs comme &eacute;tant dangereux.<\/p><p class=\"wp-block-paragraph\"><strong>D&eacute;sactivation temporaire de l&rsquo;antivirus et du pare-feu<\/strong><\/p><p class=\"wp-block-paragraph\">Si vous utilisez Windows, proc&eacute;dez comme suit :<\/p><ol class=\"wp-block-list\">\n<li>Allez dans <strong>Param&egrave;tres &rarr; Confidentialit&eacute; et s&eacute;curit&eacute; &rarr; S&eacute;curit&eacute; Windows<\/strong>.<\/li>\n\n\n\n<li>S&eacute;lectionnez <strong>Protection contre les virus et menaces &rarr; G&eacute;rer les param&egrave;tres<\/strong>.<\/li>\n<\/ol><div class=\"wp-block-image\">\n<figure data-wp-context='{\"imageId\":\"6a6ec145583ae\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec145583ae\" class=\"aligncenter size-full wp-lightbox-container\"><img decoding=\"async\" width=\"824\" height=\"597\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/generer-les-parametres-windows.png\/public\" alt=\"L'option G&eacute;rer les param&egrave;tres dans le menu Protection contre les virus et les menaces dans Windows\" class=\"wp-image-40600\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/generer-les-parametres-windows.png\/w=824,fit=scale-down 824w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/generer-les-parametres-windows.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/generer-les-parametres-windows.png\/w=150,fit=scale-down 150w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/generer-les-parametres-windows.png\/w=768,fit=scale-down 768w\" sizes=\"(max-width: 824px) 100vw, 824px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div><ol start=\"3\" class=\"wp-block-list\">\n<li>D&eacute;sactivez la<strong> protection en temps r&eacute;el <\/strong>et cliquez sur <strong>Oui <\/strong>pour confirmer.<\/li>\n<\/ol><p class=\"wp-block-paragraph\">Voici les instructions pour les utilisateurs de macOS :<\/p><ol class=\"wp-block-list\">\n<li>Allez dans <strong>Param&egrave;tres du syst&egrave;me &rarr; R&eacute;seau &rarr; Pare-feu<\/strong>.<\/li>\n\n\n\n<li>D&eacute;sactivez l&rsquo;option <strong>Pare-feu<\/strong>.<\/li>\n<\/ol><figure data-wp-context='{\"imageId\":\"6a6ec1455901b\"}' data-wp-interactive=\"core\/image\" data-wp-key=\"6a6ec1455901b\" class=\"wp-block-image size-full wp-lightbox-container\"><img decoding=\"async\" width=\"1024\" height=\"440\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/macos-pare-feu.png\/public\" alt=\"L'option Pare-feu sous l'onglet R&eacute;seau dans macOS\" class=\"wp-image-40601\" srcset=\"https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/macos-pare-feu.png\/w=1024,fit=scale-down 1024w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/macos-pare-feu.png\/w=300,fit=scale-down 300w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/macos-pare-feu.png\/w=150,fit=scale-down 150w, https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/46\/2020\/11\/macos-pare-feu.png\/w=768,fit=scale-down 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><button class=\"lightbox-trigger\" type=\"button\" aria-haspopup=\"dialog\" data-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on--click=\"actions.showLightbox\" data-wp-style--right=\"state.thisImage.buttonRight\" data-wp-style--top=\"state.thisImage.buttonTop\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\"><\/path>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure><p class=\"wp-block-paragraph\">Si vous utilisez un programme antivirus tiers, recherchez une option permettant de d&eacute;sactiver temporairement la protection en temps r&eacute;el, le bouclier web ou le pare-feu. Cette option peut &ecirc;tre r&eacute;pertori&eacute;e comme <strong>Pauser la protection<\/strong>, <strong>&#8239;Arr&ecirc;ter&#8239; <\/strong>ou <strong>D&eacute;sactiver<\/strong>. <\/p><p class=\"wp-block-paragraph\">Apr&egrave;s avoir d&eacute;sactiv&eacute; ces programmes de s&eacute;curit&eacute;, essayez d&rsquo;ouvrir le m&ecirc;me site web pour v&eacute;rifier si l&rsquo;erreur persiste.<\/p><p class=\"wp-block-paragraph\"><strong>Ajuster les param&egrave;tres de l&rsquo;antivirus et du pare-feu<\/strong><\/p><p class=\"wp-block-paragraph\">S&rsquo;il s&rsquo;av&egrave;re que votre antivirus ou votre pare-feu est &agrave; l&rsquo;origine du probl&egrave;me, envisagez d&rsquo;ajuster vos param&egrave;tres pour &eacute;viter qu&rsquo;ils ne bloquent les sites web s&eacute;curis&eacute;s :<\/p><ul class=\"wp-block-list\">\n<li><strong>D&eacute;sactiver les fonctions d&rsquo;analyse SSL ou HTTPS<\/strong>. V&eacute;rifiez si votre logiciel comporte des fonctions d&rsquo;analyse SSL ou HTTPS et d&eacute;sactivez-les. Ces fonctions peuvent parfois interf&eacute;rer avec des certificats SSL l&eacute;gitimes et provoquer des erreurs.<\/li>\n\n\n\n<li><strong>Ajouter le site &agrave; la liste blanche<\/strong>. Ajoutez le site web concern&eacute; &agrave; la liste de confiance ou aux exceptions pour vous assurer qu&rsquo;il ne sera pas bloqu&eacute; &agrave; l&rsquo;avenir.<\/li>\n\n\n\n<li><strong>Demander l&rsquo;aide d&rsquo;un professionnel<\/strong>. Consultez l&rsquo;&eacute;quipe d&rsquo;assistance du logiciel ou la documentation officielle si vous ne savez pas comment configurer correctement les param&egrave;tres.<\/li>\n<\/ul><h2 class=\"wp-block-heading\" id=\"h-conclusion\">Conclusion<\/h2><p class=\"wp-block-paragraph\">Pour r&eacute;soudre l&rsquo;erreur <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH<\/strong>, les propri&eacute;taires de sites web peuvent commencer par v&eacute;rifier le certificat SSL\/TLS, puis reconfigurer les param&egrave;tres SSL.<\/p><p class=\"wp-block-paragraph\">Pour les visiteurs, essayez d&rsquo;activer le dernier support TLS, de d&eacute;sactiver le protocole QUIC, de vider le cache du navigateur et de revoir les param&egrave;tres de votre antivirus et de votre pare-feu pour vous assurer qu&rsquo;ils ne bloquent pas les connexions s&eacute;curis&eacute;es.<\/p><p class=\"wp-block-paragraph\">La v&eacute;rification r&eacute;guli&egrave;re, le renouvellement des certificats et la mise &agrave; jour des param&egrave;tres SSL\/TLS permettent de maintenir la s&eacute;curit&eacute; du site web et d&rsquo;&eacute;viter de tels probl&egrave;mes &agrave; l&rsquo;avenir. Si vous avez des questions ou des conseils suppl&eacute;mentaires pour corriger cette erreur, n&rsquo;h&eacute;sitez pas &agrave; les partager dans la section des commentaires ci-dessous.<\/p><h2 class=\"wp-block-heading\" id=\"h-err-ssl-version-ou-mismatch-faq\">ERR_SSL_VERSION_OU_MISMATCH &ndash; FAQ<\/h2><div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1747924130373\"><h3 class=\"schema-faq-question\">Comment corriger l&rsquo;erreur ERR_SSL_VERSION_OR_CIPHER_MISMATCH ?<\/h3> <p class=\"schema-faq-answer\">Pour corriger l&rsquo;erreur <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH<\/strong>, v&eacute;rifiez votre certificat SSL\/TLS, reconfigurez les param&egrave;tres SSL, activez TLS <strong>1.3<\/strong>, d&eacute;sactivez le protocole QUIC, videz le cache de votre navigateur et examinez les pare-feu ou les programmes antivirus pour d&eacute;tecter d&rsquo;&eacute;ventuels conflits.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1747924139975\"><h3 class=\"schema-faq-question\">Comment puis-je mettre &agrave; jour ma version de SSL pour r&eacute;soudre l&rsquo;erreur ?<\/h3> <p class=\"schema-faq-answer\">Pour mettre &agrave; jour votre version SSL, activez TLS <strong>1.3 <\/strong>sur votre serveur en acc&eacute;dant aux param&egrave;tres SSL\/TLS dans votre tableau de bord d&rsquo;h&eacute;bergement ou dans la configuration du serveur. Pour am&eacute;liorer la s&eacute;curit&eacute; et la compatibilit&eacute;, d&eacute;sactivez les versions obsol&egrave;tes telles que TLS <strong>1.0 <\/strong>et <strong>1.1<\/strong>.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1747924210286\"><h3 class=\"schema-faq-question\">Que faire si l&rsquo;erreur ERR_SSL_VERSION_OR_CIPHER_MISMATCH persiste ?<\/h3> <p class=\"schema-faq-answer\">Si l&rsquo;erreur <strong>ERR_SSL_VERSION_OR_CIPHER_MISMATCH <\/strong>persiste, consultez votre fournisseur d&rsquo;h&eacute;bergement pour obtenir de l&rsquo;aide, revoyez les configurations du serveur, r&eacute;initialisez vos param&egrave;tres r&eacute;seau, r&eacute;installez votre navigateur et mettez &agrave; jour le syst&egrave;me d&rsquo;exploitation de votre appareil pour une meilleure compatibilit&eacute;.<\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>L&rsquo;erreur ERR_SSL_VERSION_OR_CIPHER_MISMATCH se produit g&eacute;n&eacute;ralement lorsqu&rsquo;un navigateur web ne parvient pas &agrave; &eacute;tablir une connexion s&eacute;curis&eacute;e parce que les param&egrave;tres du protocole SSL\/TLS du site web sont obsol&egrave;tes ou incompatibles. Ces protocoles sont importants pour le chiffrement des donn&eacute;es et la protection de la vie priv&eacute;e sur Internet. Il est important que les propri&eacute;taires de [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"\/fr\/tutoriels\/ssl-version-cipher-mismatch-erreur\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":189,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rank_math_title":"Comment r\u00e9parer Err_ssl_version_or_cipher_mismatch ?","rank_math_description":"L\u2019erreur ERR_SSL_VERSION_OR_CIPHER_MISMATCH est li\u00e9e au SSL\/TLS. D\u00e9couvrez ses causes et comment la corriger avec ce tutoriel d\u00e9taill\u00e9.","rank_math_focus_keyword":"ERR_SSL_VERSION_OR_CIPHER_MISMATCH","footnotes":""},"categories":[5273],"tags":[],"class_list":["post-7817","post","type-post","status-publish","format-standard","hentry","category-ssl"],"hreflangs":[{"locale":"en-US","link":"https:\/\/www.hostinger.com\/tutorials\/how-to-fix-err_ssl_version_or_cipher_mismatch\/","default":1},{"locale":"pt-BR","link":"https:\/\/www.hostinger.com\/br\/tutoriais\/err_ssl_version_or_cipher_mismatch\/","default":0},{"locale":"fr-FR","link":"https:\/\/www.hostinger.com\/fr\/tutoriels\/ssl-version-cipher-mismatch-erreur\/","default":0},{"locale":"es-ES","link":"https:\/\/www.hostinger.com\/es\/tutoriales\/error-ssl-version-or-chipher-mismatch\/","default":0},{"locale":"id-ID","link":"https:\/\/www.hostinger.com\/id\/tutorial\/cara-mengatasi-err-ssl-version-or-cipher-mismatch\/","default":0},{"locale":"de-DE","link":"https:\/\/www.hostinger.com\/de\/tutorials\/err-ssl-version-or-cipher-mismatch-beheben\/","default":0},{"locale":"it-IT","link":"https:\/\/www.hostinger.com\/it\/tutorial\/come-risolvere-err-ssl-version-or-cipher-mismatch\/","default":0},{"locale":"nl-NL","link":"https:\/\/www.hostinger.com\/nl\/tutorials\/err-ssl-version-or-cipher-mismatch-oplossen\/","default":0},{"locale":"en-PH","link":"https:\/\/www.hostinger.com\/ph\/tutorials\/how-to-fix-err_ssl_version_or_cipher_mismatch\/","default":0},{"locale":"en-MY","link":"https:\/\/www.hostinger.com\/my\/tutorials\/how-to-fix-err_ssl_version_or_cipher_mismatch\/","default":0},{"locale":"en-GB","link":"https:\/\/www.hostinger.com\/uk\/tutorials\/how-to-fix-err_ssl_version_or_cipher_mismatch\/","default":0},{"locale":"en-IN","link":"https:\/\/www.hostinger.com\/in\/tutorials\/how-to-fix-err_ssl_version_or_cipher_mismatch\/","default":0},{"locale":"en-CA","link":"https:\/\/www.hostinger.com\/ca\/tutorials\/how-to-fix-err_ssl_version_or_cipher_mismatch\/","default":0},{"locale":"en-AU","link":"https:\/\/www.hostinger.com\/au\/tutorials\/how-to-fix-err_ssl_version_or_cipher_mismatch\/","default":0},{"locale":"en-NG","link":"https:\/\/www.hostinger.com\/ng\/tutorials\/how-to-fix-err_ssl_version_or_cipher_mismatch\/","default":0},{"locale":"es-AR","link":"https:\/\/www.hostinger.com\/ar\/tutoriales\/error-ssl-version-or-chipher-mismatch\/","default":0},{"locale":"es-MX","link":"https:\/\/www.hostinger.com\/mx\/tutoriales\/error-ssl-version-or-chipher-mismatch\/","default":0},{"locale":"es-CO","link":"https:\/\/www.hostinger.com\/co\/tutoriales\/error-ssl-version-or-chipher-mismatch\/","default":0},{"locale":"pt-PT","link":"https:\/\/www.hostinger.com\/pt\/tutoriais\/err_ssl_version_or_cipher_mismatch\/","default":0}],"_links":{"self":[{"href":"https:\/\/www.hostinger.com\/fr\/tutoriels\/wp-json\/wp\/v2\/posts\/7817","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hostinger.com\/fr\/tutoriels\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hostinger.com\/fr\/tutoriels\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hostinger.com\/fr\/tutoriels\/wp-json\/wp\/v2\/users\/189"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hostinger.com\/fr\/tutoriels\/wp-json\/wp\/v2\/comments?post=7817"}],"version-history":[{"count":12,"href":"https:\/\/www.hostinger.com\/fr\/tutoriels\/wp-json\/wp\/v2\/posts\/7817\/revisions"}],"predecessor-version":[{"id":48676,"href":"https:\/\/www.hostinger.com\/fr\/tutoriels\/wp-json\/wp\/v2\/posts\/7817\/revisions\/48676"}],"wp:attachment":[{"href":"https:\/\/www.hostinger.com\/fr\/tutoriels\/wp-json\/wp\/v2\/media?parent=7817"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hostinger.com\/fr\/tutoriels\/wp-json\/wp\/v2\/categories?post=7817"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hostinger.com\/fr\/tutoriels\/wp-json\/wp\/v2\/tags?post=7817"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}