This screenshot and video tutorial will tell you how to install FileZilla Client and Server, a free FTP client for Windows 11/10/8/7.

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.

There are a few other commands to find large files on Linux; fd, for example, is a faster alternative. But find is typically installed by default and it’s usually all you need.