QuickTime Player
QuickTime Player won't start. How to reinstall?
When I try to open it I get a message: QuickTime Player unexpectedly quit.
iMac 21.5″, macOS 13.4
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The issue is probably not in the app itself, but perhaps in a settings file (.plist) or other support file.
Did something unusual happen the last time before this issue?
For macOS troubleshooting, try these:
- How to use safe mode on your Mac - Apple Support. ‘Safe mode’ can help you to determine whether an issue is caused by software that loads as your Mac starts up.
- How to test an issue in another user account on your Mac - Apple Support. If an issue stops happening when you log out of your macOS user account and log in with another, the issue could be related to the files or settings in your user account.
Let us know the results of these tests, for targeted next step.
How to reinstall?
Reinstall macOS clean. That’s really a last resort that you should try to avoid.