I have an excel workbook (.xlsx) in which I want to track changes. However track changes button is grayed out. I tried searching, but couldn't find any solution.
This workbook contains 5 worksheets, so I tried moving (copying) each sheet to a new workbook, and I found that when I copy one particular sheet, track changes option gets grayed out in the new workbook. So there is something in this sheet which is causing track changes to be grayed out.