My left Command Key on my MacBook Air stopped working.
I'm sharing in case anyone else ran into this problem.
The standard answers here didn't work.
I found the fix to my own problem after 2 days.
My left Command Key on my MacBook Air stopped working.
It was acting like Application Expose' every time I hit the left Command key.
Under Desktop & Dock, the Window has a 'SHORTCUTS' button at the lower right, I clicked that.
It opens another window, and under "Application Windows" - I had accidentally changed the selection to "LEFT COMMAND".
I fixed it by changing that to "-" then clicked "DONE".
My Left Command button started working correctly immediately thereafter!
MacBook Pro (2017 – 2020)
