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After upgrading my 2017 iMac to Monterey 12.3, after it sits for a period of time of inactivity while running screensaver, it automatically shuts down; can’t be reactivated by pressing a key without having to press the power-on button. My Mac did not have this problem with Monterey 12.2. Are other Mac owners experiencing this problem?
iMac 27″ 5K, macOS 12.3
Try starting up in safe mode followed by a normal startup
How to use safe mode on your Mac – Apple Support (UK)
Thank you for the suggestion. I tried it but it did not correct the problem. My Mac still shuts down automatically after being inactive for awhile.
I've got the exact same issue. After upgrading to 12.3, my iMac 27" 2020 shuts off after a period of inactivity. Won't wake from the keyboard or trackpad, have to restart it.
Monterey 12.3 Unexpected Shutdown
