Checkboxes in Excel not working

E. Pat Howard 20 Reputation points
2026-06-29T22:24:23.3133333+00:00

Up until today, the spreadsheet I was working on had working checkboxes in one column. They quit working. The boxes that have already been checked cannot be changed. When I opened the Developer tab, the checkbox option is greyed out. How do I fix this?

Microsoft 365 and Office | Excel | For home | MacOS
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Answer accepted by question author
Bob Jones AKA CyberTaz MVP 437.7K Reputation points
2026-06-30T00:49:38.85+00:00

Have a look at thee Review tab to see if Protect Sheet has accidentally been enabled. If so, click the tool to Unprotect Sheet.

If that isn't the solution please include the present Version Numbers of both the macOS & Office software as well as a screenshot of the worksheet. Also, note whether any other features are inactive... A column of Check Box Form Fields is somewhat unusual.

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