Question: Excel 2013 often complains that "We couldn't free up space on the clipboard. Another program might be using it right now" when I'm trying to copy cells. 

Some [say](http://answers.microsoft.com/en-us/office/forum/office_2013_release-excel/we-couldnt-free-up-space-on-the-clipboard-another/93ffe338-d07a-4e2d-bc07-49806f811dca) it might be caused by Zone Alarm or Bing Desktop. I have none of them. I'm running Windows 7, so I don't have [clipbrd.exe](https://superuser.com/q/531984/116475). How can I know which is the other program Excel is complaining about?

![enter image description here](https://i.stack.imgur.com/cyPAF.png)

Answer: 
This also happens if any other program is monitoring the clipboard. For example, I had free download manager and it was monitoring the clipboard. When I switched this option off, the problem went away in Excel 2013.

And I do not have bing desktop nor do I have zone alarm.
I had light downloader running which was monitoring the clipboard. I disabled monitoring of the clipboard and wahlaah, no more error.