A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
- Does it still allow you to save the workbook?
- Do you have any circular references in formulas that you have accepted and allowed to remain?
Try the following:
- Select menu item File -> Options -> Formulas
- Check under the heading "Error Checking" and "Error Checking Rules" and tell us which boxes are checked. (Use the Snipping tool and post a screen shot via the "Insert image" icon in the post editor.
- More information on Snipping tool at the following link.
I suggest that you pin the Snipping Tool to the Task bar for ease of use.