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.

Need to use third-party programs to open files on your PC? Here's how to change file associations in Windows 10 and choose which apps open which file types.

If you’re tired of Windows opening files in the wrong apps, changing file associations may fix the problem. Here’s how to do it.