I have my Mac set up to switch spaces using Cmd + Num but sometimes, out of the blue, they will stop working unless I do the command when in mission control. Anybody have any idea why this happens?

  • something else is using that key combo? Lots of apps use Cmd/num to switch views; it's not a great one to have swapped it to, tbh.
    – Tetsujin
    Dec 10, 2014 at 13:19
  • It's odd, I use it without problem and it just seems to stop working at one point and not to anything at all.
    – 8vius
    Dec 10, 2014 at 16:33
  • Try Ctrl/num instead & see how it goes. I've used that since Spaces was invented & never had a conflict.
    – Tetsujin
    Dec 10, 2014 at 21:00

1 Answer 1


I've found that some mission control problems are resolved by restarting the "Dock" process (which handles the job of Mission Control). If you care to try that, the Terminal command is:

killall Dock

(But first use killall -s Dock to make sure the command will only kill the one process.)

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