This error appears when your FTP client exceeds the maximum allowed number of simultaneous FTP connections from a single IP address: vbnet Copy Edit
Response: 421 Too many connections (8) from this IP
Error: Could not connect to server
Why This Happens
Idle or excessive FTP connections are usually caused by:
- Your FTP client opening multiple connections without closing old ones.
- Incorrect or aggressive client settings (like multiple file transfer threads).
Limits Based on Hosting Type
- Shared Hosting: Max 8 simultaneous FTP connections per IP (cannot be increased).
- VPS / Dedicated / Managed Hosting: You can modify this limit in WHM (default is 8–10).
How to Close Idle FTP Connections (via cPanel)
- Log in to cPanel.
- Go to Files > FTP Session Control.
- Find the list of active FTP sessions.
- Click Disconnect next to any idle or stuck sessions.
- Confirm the action when prompted.
You’ll see a message like:
"The FTP session with PID 27510 was terminated."
Tips to Prevent This Error
- Limit concurrent connections in your FTP client settings (set to 2–4).
- Enable the "Keep Alive" option if available.
- Disconnect manually if you're done uploading/downloading.
If you continue to see this error, consider upgrading to a hosting plan that allows more simultaneous connections.
