MAIL Interrupt shut down progress
Why do I get the message "... MAIL Interrupt shut down progress..."
Whan I shut down my MacBook Pro macOS 10.13.3?
MacBook Pro (Retina, 15-inch, Mid 2015), macOS High Sierra (10.13.2)
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Mail sometimes hangs when closing so one must do a force quit on it.
Boot into Safe Mode, Mac OS X: Starting up in Safe Mode, and reboot normally. Then shutdown again and see if there's any improvement.