Sierra 10.13.6 on macOS 10.13.6 is not quitting while not running.

Sierra 10.13.6 on macOS 10.13.6 is not quitting while not running.... literally. What do I do about this? Illustration below shows message received when trying to start Safari from finder AND the dock shows that Safari is running. Thanks for your help.

iMac 21.5″, macOS 10.13

Posted on Feb 10, 2023 10:39 AM

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Posted on Feb 10, 2023 12:21 PM

Power down.


Safe Boot, (holding Shift key down at startup), does the problem occur in Safe Mode? Could take 10 minutes.


Safe mode attempts to repair Disks & clears lots of caches & loads safe Drivers, & prevents loading of 3rd party extensions, so if Safe Mode works try again in regular boot.

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Question marked as Top-ranking reply

Feb 10, 2023 12:21 PM in response to MapSkraps

Power down.


Safe Boot, (holding Shift key down at startup), does the problem occur in Safe Mode? Could take 10 minutes.


Safe mode attempts to repair Disks & clears lots of caches & loads safe Drivers, & prevents loading of 3rd party extensions, so if Safe Mode works try again in regular boot.

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Sierra 10.13.6 on macOS 10.13.6 is not quitting while not running.

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