When you open files that have a particular file extension, Windows will look at its configuration to determine what the default program should be in order to work with these files. The default ...

We show you multiple ways using which you can change File Type.r Extensions or Format on Windows 11/10. You can also use the Command Prompt.

If you can't change default app by file type in Windows 11/10, then reset the problematic app, remove file type association, etc.

Microsoft has made it harder to choose which apps handle standard file types. Follow these steps to set default apps for all your documents, images, music files, and more.