Using the the F3-key should normally activate Exposè/Mission Control. In some circumstances nothing happens when you hit the F3-key or the four finger up gesture.
To solve this problem apply the following defaults write command:
defaults write com.apple.dock mcx-expose-disabled -bool FALSE
Restart the OSX Dock:
F3 and the four finger up gesture will work again.
1 thought on “Fix for not working Exposè/Mission Control”
I cannot thank you enough, this fixed my expose issue.
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