Microsoft uses file associations to set default programs for opening different file types on all its operating systems. As a result, when you open a file, be it text, image, or document, on your ...

What steps do I need to take to change the default action on Windows XP and Windows 7 when someone tries to open a CHM file? I want the file extension to be associated with notepad.exe for ALL users.

Windows 11 (and Windows 10, which reached end of support in October 2025) lets you assign default apps for file types, protocols, and links. But a persistent and frustrating bug causes these settings ...

I had to help a friend with his computer over the weekend. It seems his PC forgot he had Adobe Acrobat installed and instead it was opening PDF files in Google Chrome. I wasn't quite sure how his ...

If you cannot change the default app by File Type in Windows 11/10 then this post is sure to help you resolve the issue. Windows 11/10 provides built-in options to change the default app(s) to open ...

Note: We have included screenshots of Excel. However, if you want to make the change in Word or PowerPoint, you must follow the same steps. The list of file extensions will be different as per the app ...