A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Ours started doing the same thing yesterday. At first I thought it was something with just my computer, but now others are having the same issue. Not sure what is going on, but I do know its getting pretty annoying.
*UPDATE* I called to check with our IT guy and we tested it using different versions of Excel. Excel 2016 is having this problem on most every excel document, however when the same document is opened using Excel 2013 there is no issues at all. Looks like this is only affecting Excel 2016.