Cannot associate a file extension to an application in Windows 7/8/10

If you are cannot associate a file extension to an application in Windows 7/8/10, you may want to try this out:

Cannot associate a file extension

Open regedit and navigate to:


Here find the .exe name which is creating problems

Expand it and navigate it to:

Shell > Open > Command.

Double click on it and ensure that the application location points to the actual location of the executable file, in the value data field.

Exit the Registry Editor.

Now associate the file type for this particular extension and see if it helps!

Our freeware File Association Fixer for Windows should also interest some of you. This post will show you how to reset all File Associations to default in Windows 10.

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Anand Khanse is the Admin of, a 10-year Microsoft MVP Awardee in Windows (2006-16) & a Windows Insider MVP. Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.