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.

Upon you restoring the FileZilla client window on your computer, you will get a prompt to update the file on the server. That’s how FileZilla will help you manage your FTP Server Files.

Install the FileZilla FTP Server The FileZilla server installation is a regular Windows "just press Next" wizard, and for most users, the suggested default settings will work. However, let's take ...