AS PER POST FROM Excel 21 213 & 216 can all suffer from the error We couldn't free up space on the Clipboard. Another program might be using the clipboard. s This Infamous Excel Error can prevent 'Cut Copy & Paste' and or Dragging & Dropping Cell Contents (to another cell). It is one of the oldest and most misunderstood of all Excel Errors. The average MSFT Office technician (Level 1 & 2) does not know how to fix the Excel Error. They will perform a lot of frivolous 'repairs' that only provide a temporary fix at best. That's why I decided to offer the ONLY solution. The issue is caused by another software application installed on your PC that is ipatible with Excel. Therefore the Office 'repair' function won't fix the issue. Nor will uninstalling & reinstalling Excel. Microsoft admitted that Zone Alarm and Bing Desktop Search will cause this Excel Error. HOWEVER the dirty Truth is that MANY software applications will cause the error. There are only two 'fixes' 1. Uninstall Excel and find another spreadsheet program. 2. Discover what software program on your PC is ipatible with Excel. (That is a tedious ordeal in itself. And hopefully you know how find the ipatible software.) AFTER YOU DISCOVER THE SPECIFIC SOFTWARE CAUSING THE CONFLICT WITH EXCEL you must do one or more of the following 1. Don't use the ipatible software while using Excel. Simply close out the ipatible software before using Excel. (That is the problem & fix for those who only suffer from the Excel Error infrequently.) 2. Make sure that the ipatible software doesn't have a 'service' or 'process' running in the background (even though the software is not open). Some software have background processes that start with Windows. In this case you must disable the background service or process. (This is the likely problem for those who constantly suffer from the Excel issue.) 3. Uninstall the ipatible software. For me the ipatible software was ToolWiz Time Freeze which Excel 216 apparently hates. ToolWiz has a background service that starts up with Windows. Disabling that background service solved the Excel Clipboard error. YOU WILL FIND A LONG LIST OF SOFTWARE THAT CAUSES THE EXCEL ERROR IN THE COMMENTS SECTION OF THIS MSFT TECHNET ARTICLE at s s Another list of software hated by Excel is found at Excel Error We couldn't free up space on the Clipboard. Another program might be using it right now. Really quite shocking that MSFT has allowed this error to go unfixed since Excel 21.