Now having done that, what if you now want to undo this choice and reset the settings to default?

Undo Always use this app to open files option

Windows 11

If you have selected some option to Always use this app to open a file with, and you would like to undo this action, then this post shows how exactly to do this.

If you want to go back to the default apps for all files, that are recommended by Microsoft, then in the Default apps panel, scroll down.

Click on the Reset button against Reset all default apps.

Windows 10

If you want to go back to the default apps for all files, that are recommended by Microsoft, scroll down the page and under Reset to Microsoft recommended defaults and click on Reset. This will reset all File Associations to default.

That’s it! This simple exercise will undo your action for the Always use this app to open files option.