How do I change a file type to open back to its default app.

[Windows Central Question]

I think originally, .7z files aren't supposed to open with anything in particular. I accidentally opened my .7z file with notepad once. Now I all of my .7z files are opening with notepad. I want to reset it so that it doesn't open with any other app, but I don't know how.

 

[T Moore]

Right click a file, select 'open with', select what you want to open the file with. If that works as expected check the box, always use this