Problem: While dragging the cells or Merging the cells in excel 2013 you might get the error. "We couldn't free up space on the clipboard. Another program might be using it right now" Cause: There could be any reason for this error message and it occurs when your memory usages will increase. Like using skype,bing desktop toolbar,Zone allarm,Multimon taskbar,team viewer,Ask Toolbar. Solution: Step 1: Look into event viewer for the error code.You can type Eventvwr.msc in Run Window. Step 2: Open Task bar and close and exit the that process which might causing the issue. Step 3: If possible un install all those programs mentioned above to check the status. Step 4 : Try to increase the Virtual Memory of your computer.You can right click on mycomputer-> properties -> Advanced -> Visual effects -> update the max memory to your computer. Hope this will fix the issue.