I set up the FTP server to use a port other than 21 (2133 in my case), so when signing in with FileZilla, everything turns out fine.

If you need an FTP server up and running quickly, you can't beat the ease of VSFTP. Jack Wallen shows you how to install and configure it in minutes.

Check in Services if the service "FileZilla Server FTP server" is even running. Might not have started post-install or might be set to manual.