Kill the duplicates in your Mac’s “Open With” menu

Kill the duplicates in your Mac’s “Open With” menu.

  1. Make sure your computer has a current Time Machine backup. Using Terminal can be dangerous if you mistype something.
  2. Launch Terminal from your Applications/Utilities folder.
  3. Copy and paste this command into Terminal and press return:

    System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -r -domain local -domain system -domain user

  4. Reboot or force-quit Finder.

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