This is a result of 1 of 3 things (in general)
- A local Firewall or Anti-Virus software is severing the connection.To check this, TEMPORARILY deactivate your firewall / Anti-Virus software and try again. (make sure to check your local windows firewall if you are running windows)
- Your connection through your ISP is being severed, to check this you can contact your ISP and have them give you an FTP test.
- The server is not responding or having issues. You may contact us to see if this is the case.
Other than that the issues will vary depending on the local machine and environment.