Hi, thanks for the comment, but you missed the point. Yes, that’s an easy way to swap file association with another app/program, however, that’s not the theme of this article.

What if you wish to REMOVE file association altogether e.g. unregister any association in the first place?

There’s an easier way. I just found it. Open explorer. Find a file of the type you wish to change. Right-click. Select properties. Under the general tab you will see the Type of File: below that you will see Opens with: to the right press Change. I will let you figure it out how to select the proper program from here.

This tutorial is for Windows 10 Pro. Check your operating system version. Also, you need administrator privileges, in case you use corporate computer, without it you’ll be able to change only HKEY_CURRENT_USER branch (current user account).