I have a perplexing problem with one of my Excel spreadsheets. I have a "task list" spreadsheet, with conditional formatting to highlight items that are near their due date and overdue. One cell in my entire worksheet is not allowing the conditional formatting, and I am not sure why. It does not matter what is in the cell.
I have tried:
- deleting the table row
- deleting the entire row
- re-typing the cell
- re-sorting the cells
- deleting and re-creating the rule
- verifying that the rule is applied to that cell
Any ideas as to what is causing this?
The affected cell is D5. You can download the spreadsheet here: Google Drive download link

NumberorGeneral? - urdearboy