MacOS – Mission Control not working

macosmission-control

Mission Control isn't working on my Mac. I've tried killing the Dock through Terminal and Activity Monitor multiple times, but nothing seems to be working. Even shortcuts or Hot Corners don't work anymore.

What do I do?

Best Answer

This was happening to me for a long time and I did some research and found out how to fix it. Go into terminal and run the following commands.

defaults write com.apple.dock mcx-expose-disabled -bool FALSE
killall Dock

This should fix all of your problems.

Related Solutions

MacOS – Hot Corners for Mission Control stop working

Had this issue November 2016 running OS 10.12.1 "Sierra" an additional symptom is that Mission Control was not launching. I fixed it by opening Activity Monitor, Quit the dock (force quit was not necessary). Went back to normal

MacOS – OSX Yosemite – Mission Control stopped working

(This irritating bug seems to be biting me more often after updating to 10.10.4)

When this happens and I don't want to have to reboot, I only restart the "Dock" process and the problem is gone. There's probably some GUI way to do it, but I just drop into Terminal and do:

killall Dock

But before that, run killall -s Dock to see what would be killed, to make sure it's only going to directly kill the one "Dock" process.

Once you run killall Dock, Dock will restart in a few seconds and then Mission Control is working again. You can verify that the restart happened by checking the Process ID of "Dock" after the restart.

Best Answer

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MacOS – Hot Corners for Mission Control stop working

MacOS – OSX Yosemite – Mission Control stopped working

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