How to fix Error 421 too many connections (8) from this IP Error in FileZilla

In this tutorial, you’ll learn how to quickly fix 421 too many connections (8) from this IP error using FileZilla FTP client and cPanel.

Error code	421 Too Many Connections
Error type	FTP
Error variations	421 Too Many Connections (8) from This IP 421 Service Not Available Remote Server Has Closed Connection
Error causes	Low limit of maximum connections Too many active connections to one FTP account

How to Fix 421 Too Many Connections (8) from This IP Error?

421 too many connections (8) from this IP error mainly occurs when you open a new FTP connection without closing non-active (idle) ones.

If you’re using shared hosting, this error may also happen because your hosting provider limits simultaneous FTP connections to prevent server overload.

Now that you know the causes of this error let’s learn how to fix it.

Step 1. Fixing 421 Too Many Connections (8) from This IP Error in FileZilla

First of all, limit simultaneous connections in your FTP client configuration. Here’s how:

1. Launch FileZilla and click File -> Site Manager.
2. Under the Select Entry section, choose your site, then tap the Transfer Settings tab.
3. Tick the Limit number of simultaneous connections box and fill out the Maximum number of connections field with your preferred amount of connections.
4. Click OK to save the settings.
5. Reconnect and see if FTP error 421 is gone.

Step 2 – Flushing (Dropping) Non-Active Connections in cPanel (Optional)

If you’re using cPanel, you can easily drop non-active FTP connections to resolve 421 too many connections from this IP error:

1. Access your cPanel -> Files -> FTP Connections.
2. You’ll see all FTP connections in the Current Connections section. Press the Reload button if you don’t see any.
3. Under the Actions column, click Disconnect next to the idle connection you want to close.
4. Then, press the Disconnect button again to drop the FTP connection.
5. Reconnect and check if FTP 421 response has disappeared.

Conclusion

In this tutorial, you’ve learned the straightforward steps to fix 421 too many connections (8) from this IP error. You’ll only need to set up your FTP client configuration to limit simultaneous connections, then disconnect non-active FTP connections via cPanel.

If you have any further questions, let us know in the comments section below.

All of the tutorial content on this website is subject to Hostinger's rigorous editorial standards and values.