1 Or choose Force Quit from the Apple menu in the corner of your screen.Ī Force Quit window opens. Press these three keys together: Option (or Alt), Command, Esc (Escape). If the app doesn't quit, follow these steps to force the app to quit. To quit a Mac app normally, choose Quit from the app's menu in the menu bar, or press Command-Q. If an app stops responding and you can't quit the app normally, use these steps to force the app to quit.