To open a new tab, simply navigate to the top of the File Explorer window and click the small “+” button next to the tab. Voila! A new tab opens.

It can open Office files in the desktop app, but if there is a way to associate other files with applications like you can with file types in explorer, we haven't found that either.

Windows 11's File Explorer is getting a bunch of new buttons that will make its Home page a lot more convenient.