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: 
I too was seeing this very frustrating error. Since making the below change though it appears that the problem is resolved.

Note that I am not running any of the programs (Bing Desktop etc.) that are commonly attributed to this issue, even by Microsoft themselves.

It seems this might be caused by the Office Clipboard, the need for which I have never been quite sure of since it appeared in Office many years ago. Turning off the notification or recognition for Office Clipboard seems to do the trick.

Open up the clipboard options by clicking the expansion arrow on the ribbon in the home section (this is Excel, but other Office apps should be identical or very similar).

![Clipboard ribbon expansion](https://i.stack.imgur.com/WkaeN.png)

Open the Options dialog at the bottom left of the pane that opens up. Select '*Collect Without Showing Office Clipboard*' and close the pane.

![Clipboard options](https://i.stack.imgur.com/YC79d.png)

Hopefully the issue is now resolved and you can copy and paste without errors or the cell focus being lost.

Edit: It appears, anecdotally at least, that this may be related to running the 32-bit version of Office on a 64-bit OS. That's certainly what I'm doing and many others seems to be in the same situation. Be interesting to see if this holds true.
Hope this helps someone else. I have a user a HP Z820 workstation with windows 7 Professional sp1, 32GB RAM, 1TB drive with ~712GB free space, Office 2013 sp1. Yes, it’s a workstation but this user runs a lot of programs at once including large excel spreadsheets with pivot tables. They recently started having this error when trying to drag data in an excel cell to another cell. They figured out that if Outlook is not running then the error does not come up. But that is not workable as there is a need for the user to have outlook, word, and excel to be opened at the same time. I figured some other app was interfering with the clipboard since this error was not happening from day one when I installed office. I started to close programs one at a time and test after each. The last program I closed that allowed outlook to be open and not get the error message in excel was skitch. The user had installed skitch to allow them to capture screens and bring it into Evernote from other applications. And apparently the combination of Outlook and Skitch causes Excel to complain when you try to drag cell content to another cell. I could reproduce this every time. So if you have office 2013 sp1 and you have both outlook and excel running with skitch running in the background and you get the error when dragging cells in excel, simply go to the system tray area and kill skitch.