List of Common FTP Error Codes and How to fix it

Connection timeout

There are a few different reasons that a connection timeout can occur:

Slow or unreliable connection

Somewhere between your local machine and the host server is a slow or unreliable connection.
To counter this:

  1. In the main menu, click on Edit > Settings….
  2. From the menu on the left, select Connection.
  3. Increase the number in the Timeout in seconds field.
  4. Click on OK.

Incorrectly configured server

If the connection times out on large file transfers, a server somewhere between your local computer and the remote server might be incorrectly configured, identifying the command channel of the connection as ‘idle’, and closing it. This is a misconfiguration, and ideally should be handled by opening a support ticket with the owner of the server.

You might be able to counter it temporarily:

  1. In the main menu, click on Edit > Settings….
  2. From the menu on the left, select Connection > FTP.
  3. Tick the Send FTP keep-alive commands checkbox.
  4. Click on OK.