Windows: File associations per user

If file associations are messed up on a specific user and the File Associations in Folder Options are correct, do this:

  1. Press [Win+R]
  2. Type regedit and press [Enter] to open Regedit (the registry editor)
  3. Navigate to HKEY_CURRENT_USER\Software\Classes
  4. Find you file type and see the software opens it. Usually the path to the software is messed up. Correct it and restart the computer.

I had a problem with .xls files on a single user like double clicking the file and nothing happened. If I opened Excel and did an Open for the file, it worked, but no double clicking.

NOTE: System wide file associations are in HKEY_LOCAL_MACHINE\Software\Classes.

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