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MacOS: when “Command-Tab” does not work (no visual response, no application switching) you need to restart the Dock

Posted by jpluimers on 2021/05/21

Based on [WayBack] Command-Tab Not working….. – Apple Community

If you go to Activity monitor and search for dock, doubleclick on it, choose Force quit.
It will restart the Dock app and now it should work.

I wrote this alias which restarts Dock (including Dashboard and Spaces as they are served by the same process).

alias restart-dock-dashboard-spaces='killall -KILL Dock'

Related: my 2013 post Mac: Restarting the Mac OS X Dock, Finder, Spaces or Menubar | Stefan Ernst.

–jeroen

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