If an app on your Mac stops responding, quits unexpectedly, or won’t open

If an app on your Mac doesn't work as expected, try these solutions.

Quit and reopen the app

If the app is open, try to quit the app, then open it again. If it won't quit, force the app to quit.

Restart your Mac

Restart your Mac.

Install software updates

  • If you got the app from the App Store, open the App Store and check the Updates section for updates. If you got the app from another source, get updates from the app developer's website.

  • Update macOS on your Mac

Delete and reinstall the app

  • Delete the app. When you do this, you might lose data that was stored in the app.

  • Then redownload the app. If you didn't get the app from the App Store, redownload it from the app developer's website.

Get more help

If you got the app from the App Store:

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