Sometimes you cannot associate a program with an extension in Windows 7
This article provides a solution to an issue where you're unable to associate a file extension to an application in Windows 7.
Applies to: Windows 7 Service Pack 1
Original KB number: 2159999
You may not be able to associate a file extension to an application in Windows 7.
This may occur if the program you are attempting to associate with is not registered correctly.
Follow the steps below:
- Type regedit in the Run line or from an elevated CMD prompt.
- Navigate to
Computer\HKEY_CLASSES_ROOT\Applicationsand find your .exe name.
- Navigate under its name to shell> open> command.
- Under Default, make sure the application location points to the actual location of the executable.
- Press OK and then try to reassociate the file type as you normally would.