Command opens Mission Control and can't over ride it

Everytime you hit cmd every window resizes pulling you out of the app you were in and unable to use any shortcuts! Really annoying.
The cmd key alone isn't assigned to any shortcut in system preferences>keyboard>shortcuts, nor is it assigned to anything in mission control?!
Restore defaults doesn't solve it.
Really at a loss so any thoughts really appreciated.

Sounds like you've got something else running that is messing with Mission Control. Do you have anything like 'Total Spaces' installed?
If not, the first thing to try is open Terminal (Applications > Utilities > Terminal.app) and type or paste this command into the Terminal window:
killall Dock
Then press 'return' on the keyboard. You should see the Dock disappear for a second or two then reappear. Now go and test Mission Control. Same problem?

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Command button opens mission control, so I can't use it for other shortcuts

I have only had my macbook air for a few weeks, and I think I may have fiddled with settings before I had any clue what I was doing, as now every time I press the command key, it opens mission control, and I can't use command for other shortcuts... What have I done wrong and how do I undo it??? Help much appreciated!

I am having this issue, too, and Keyboard Shortcuts doesn't fix it, as I have not assigned Command to anything. It just states at the bottom "for additional choices press Shift, Control, Option, or Command," but doesn't seem to allow me to change these. Do you know of a way?

Macbook pro w/ Mavericks - right command and right option functioning as shortcuts for mission control and show desktop

Hello,
All of a sudden my right command and right option keys are functioning as shortcuts for mission control and show desktop respectively. I haven't changed anything and can't seem to find any shortcut option in system preferences to change it. Control + up still works for mission control as default, and F11 is still show desktop. Left command and left option are working as normal.
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Hello benja_d
That is an interesting issue with the keyboard. To help isolate the issue, open up the Keyboard view to see if there are any keys being held down while you are typing to see if that is the issue. You will also will want to try this in another user on your computer to see if it something that is User specific or system wide. Let me know if you have figured out this part and I can help you further.
One or more keys on the keyboard do not respond
http://support.apple.com/kb/ts1381
Regards,
-Norm G.

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I personally never use it.
There are plenty of application for using your mac, but there are a lot of built in shortcuts you can make for it too.
If you did, sort of want to use mission control, but don't have a touch sensitive device to bring it up, you can do a couple of things that the mac already is capable of doing without having to purchase anything new or download a third party app.
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I use spotlight a lot and it keeps my desktop very clean of anything that I'm not working on or with.
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there is a way to make your keyboard's Function keys act as "hotspots" as well.
go to system preferences>keyboard and you can set your own keyboard shortcuts or see the ones that are preset in OSX. These are here to help you navigate your mac faster.
Another keyboard shortcut I like is cmd+tab. if you hold down the command key, and you tap on the Tab key, a thing called "Application Switcher" appears. This lets you see what is open and also lets you select which one you want to come to the forefront. you can continue to hold the command key down after hitting tab to use your cursor to select the application or continually hit tab with the command key down until it is highlighting the app you want.
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I am not running or using Yosemite, so I cannot help you with your Yosemite issues,
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Command opens Mission Control and can't over ride it

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