{"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&rsquo;erreur ERR_SSL_VERSION_OR_CIPHER_MISMATCH ?"},"content":{"rendered":"<p>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>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>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\":\"69f292a96684a\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\/public\" 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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/div><p>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>Cette erreur est un moyen pour le navigateur de prot&eacute;ger les utilisateurs contre la visite de sites web potentiellement dangereux.<\/p><p>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>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>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>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>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><strong>V&eacute;rification de la validit&eacute; du certificat SSL<\/strong><\/p><p>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\":\"69f292a968556\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/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><strong>Comprendre le rapport de Qualys SSL Labs<\/strong><\/p><p>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\":\"69f292a969b43\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/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\":\"69f292a96af11\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/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\":\"69f292a96c366\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/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\":\"69f292a96d8e2\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/div><p><strong>Recherche d&rsquo;un nom de certificat non correspondant<\/strong><\/p><p>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\":\"69f292a96ece6\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/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\":\"69f292a97011f\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/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>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><strong>Reconfiguration des param&egrave;tres SSL sur Hostinger pour Lifetime SSL<\/strong><\/p><p>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><\/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\":\"69f292a97276b\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\/public\" 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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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\":\"69f292a973b7f\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\/public\" 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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/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><strong>Reconfiguration des param&egrave;tres SSL via Cloudflare pour SSL universal<\/strong><\/p><p>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\":\"69f292a975919\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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\":\"69f292a976ea9\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/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\":\"69f292a9784b8\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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>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>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>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><strong>Activation de TLS 1.3 pour les anciennes versions de navigateurs<\/strong><\/p><p>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\":\"69f292a979dba\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\/public\" 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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><strong>Activation des anciennes versions de TLS<\/strong><\/p><p>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>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\":\"69f292a97b29a\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/div><ol start=\"4\" class=\"wp-block-list\">\n<li>Red&eacute;marrez Chrome pour appliquer les modifications.<\/li>\n<\/ol><p>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\":\"69f292a97c80b\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/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    <p class=\"warning\">\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    \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>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>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>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\":\"69f292a97e2f5\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/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>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>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>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\":\"69f292a97f7ac\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/div><ol start=\"5\" class=\"wp-block-list\">\n<li>Cliquez sur <strong>Supprimer les donn&eacute;es<\/strong>.<\/li>\n<\/ol><p>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\":\"69f292a980cad\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/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>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><strong>D&eacute;sactivation temporaire de l&rsquo;antivirus et du pare-feu<\/strong><\/p><p>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\":\"69f292a982256\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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><\/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>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\":\"69f292a983773\"}' data-wp-interactive=\"core\/image\" 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-async--click=\"actions.showLightbox\" data-wp-on-async--load=\"callbacks.setButtonStyles\" data-wp-on-async-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\" aria-label=\"Agrandir\" data-wp-init=\"callbacks.initTriggerButton\" data-wp-on-async--click=\"actions.showLightbox\" data-wp-style--right=\"state.imageButtonRight\" data-wp-style--top=\"state.imageButtonTop\">\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>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>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><strong>Ajuster les param&egrave;tres de l&rsquo;antivirus et du pare-feu<\/strong><\/p><p>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>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>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>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":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":"en-UK","link":"https:\/\/www.hostinger.com\/uk\/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-PH","link":"https:\/\/www.hostinger.com\/ph\/tutorials\/how-to-fix-err_ssl_version_or_cipher_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":"es-AR","link":"https:\/\/www.hostinger.com\/ar\/tutoriales\/error-ssl-version-or-chipher-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}],"_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}]}}