Hi! I'm Leonardo! An Independent Advisor and also a Microsoft user for several years. I'll be more than happy to assist you today!
Where did you go to try and associate this file type with another program?
In case you tried something different, follow the steps below and if if you can associate this file type with another program:
1.Right-click the Start button (or hit the WIN+X hotkey) and choose Settings.
2.Select Apps from the list.
3.Choose Default apps on the left.
4.Scroll down a little and select Choose default apps by file type.
5.Locate the file extension for which you want to change the default program.
If you're not sure what extension the file is using, open File Explorer to find the file and use the View > File name extensions option to show file extensions.
6.In the Choose default apps by file type window, select the program to the right of the file extension. If there isn't one listed, select Choose a default instead.
7.In the Choose an app pop-up window, pick a new program to associate with that file extension. If there isn't one listed that you want to use, try Look for an app in the Store.
Windows 10 will now open the program you chose each time you open a file with that extension from File Explorer.
I hope this helps! Please let me know if that works for you.
Leonardo Mesquita
Independent Advisor