Help! That’s exactly what I felt like in this situation. I was working in Excel 2010 on a workbook with multiple sheets when I suddenly couldn’t interact with the Insert or Data menus (they were entirely greyed out), I also couldn’t interact with my PivotCharts at all. I spent half an hour scouring the Internet and reading that it may be to do with my Sharing or Protected Workbook options, but my workbook was neither …