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

Windows OS does not provide a GUI to dissociate file type extensions. If you need to remove file association, you can use Unassociate File Types utility.

Microsoft is making it easier to change your default file associations by adding a new search feature that lets you quickly find the extension you wish to modify.

OpenWith Enhanced replaces this basic tool with one that tells you which programs are the best options, lets you remove associations, and even change icons for specific file types.