Written by
Connie Yang
After upgrading to macOS Sequoia, your Mac constantly or randomly restarts when you are in use or sleep mode.
macOS Sequoia attempts to restart while you are actively using it every few minutes, prompting a message about ongoing apps being quit. Or, macOS Sequoia causes your Mac to restart every time you put it to sleep.
Whatever the situation you are in, we are here to help you out. You can follow our post to learn the reasons and find the solutions to fix random macOS Sequoia restarts during standby.
Why is your Mac restarting randomly after upgrading to macOS Sequoia?
Mac keeps restarting after the Sequoia 15.1 update can be caused by diverse reasons. The common causes for random macOS Sequoia restarts during standby usually contain conflicts from incompatible or outdated third-party apps, glitches from certain peripherals, system bugs, insufficient memory, etc.
Go to help others learn the reasons why their Mac keeps restarting after the Sequoia update.
How to fix random macOS Sequoia restarts during standby?
Random macOS Sequoia restarts during standby disturb your work on your Mac, but it is not hard to tackle this issue. We have listed the ways below. Follow them one by one until you get out the Mac keeps restarting issue.
Disconnect all external devices
Perhaps, it's a coincidence that your Mac keeps restarts after upgrading to macOS Sequoia. The troublemaker is the interference from the external device you recently connected to your computer.
You can disconnect all peripherals from your Mac and then reconnect them one by one until find the problematic one.
Update the third-party apps
Maybe you haven't updated the third-party apps on your Mac after the macOS Sequoia update. The outdated apps are incompatible with the new system. Just go to the Apple menu > App Store > Updates and update all the applications that need to be updated.
Quit useless or suspicious processes
Some users say that memory leaks after upgrading to macOS Sequoia, making the Mac keep restarting while running. The massive memory usage mainly occurs on the Mail utility, browsers like Safari and Firefox, WindowServer, etc., or certain programs running in the background.
Therefore, you can close the useless and suspicious processes in Activity Monitor and then observe if the random macOS Sequoia restart happens during standby.
- Click Launchpad > Other.
- Click the Memory tab.
- Select the processes that eat so much memory and click the Stop button to close them.
Uninstall problematic apps
If your MacBook keeps restarting in macOS Sequoia yet when running certain software, it shows that these apps haven't been upgraded to support the latest system. In that case, uninstall them from your Mac.
Usually, a simple move to the Trash action won't completely uninstall a third-party app on a Mac. The software's associated files may remain on your Mac and continue taking up your memory and space.
You are advised to use a professional app uninstaller like CleanMyApp to uninstall your unwanted apps and all their associated files from your Mac.
Remove login items
If you find macOS Sequoia frequently restarts by itself even if you haven't run any apps, go to check and disable your login items. Maybe some apps are automatically added to your login item list and launched in the background with your Mac boot-up.
- Click the Apple icon > System Settings.
- Select General > Login Items.
- Select the items and click the remove button (-) to delete them from the list.
Check and reset your lock screen settings
Some users in MacRumors say that macOS Sequoia automatic restart occurs after the screensaver is activated and the screen goes blank. When the computer is in use, the issue doesn't happen.
So, the trick to fix the issue is to reset your lock screen settings.
- Click the Apple menu > System Settings > Lock Screen.
- Change the time for "Start Screen Saver when inactive," "Turn display off on battery when inactive," and "Turn display off on power adapter when inactive" to "Never."
Update your Mac
If the above ways and tips can't stop random macOS Sequoia restarts during standby, the current macOS version probably has bugs. You can check if there's a minor update available and update your Mac.
If this post helps fix constant restarting after upgrading to Sequoia, share it with others.
