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I'm using Microsoft Excel 2007. Recently it has developed a very annoying problem: From time to time, I am unable to use cut, copy, paste or paint format.

The only remedy seems to be a complete computer reboot. Closing Excel and re-opening does not solve the problem.

What can I do?

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See also… – Nickolay Oct 10 '12 at 14:05

I just had my son figure it out for me. The culprit is Skype's Click to Call feature. Removing it fixes the problem.

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