Apple ID “Greyed Out”

15 May

  1. Go to the app listed in the App Store as needing an update (usually in the /Applications folder).
  2. Right click the app then click “Show Package Contents”.
  3. Go into the “Contents” folder, then into the “_MASReceipt” folder.
  4. Delete the “receipt” file (you may need to enter a local administrator username and password).

 

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