BONES of Sierra crashing to the LOGIN screen while using the service of mission control.

After Sierra OS upgrade my MacBook Pro hangs on login screen every time I have used the function of mission control.

Hey hernj103,

Thank you for using communities of Apple Support. I can see your post after upgrading to Mac OS Sierra that reboots your MacBook Pro, if you use mission control. There could be a number of reasons that could cause this and I want to help you have a reliable working Mac, so I'm here to help! If you have not already done, you want to make sure that you have a backup of your data and you can use the option in the link below:

Use Time Machine to back up or restore your Mac

Once your data is secure, you'll want to test this function in Mode safe mode and see if you get the same effect. Safe mode (sometimes called secure boot) is a way to start up your Mac so that it performs certain checks and prevents certain software from loading automatically or opening. Also, it verifies your startup disk and trying to fix problems if necessary directory and delete font caches, hiding the kernel and other files of the system cache. The following link can show you how to start your MacBook Pro in Mode safe.

Try safe mode if your Mac does not end commissioning

If you continue to have problems after the safe boot mode, let know us and we can continue to solve the problems there.

See you soon.

Tags: Mac OS & System Software

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