I have protected a worksheet as it has several formulae on that I do not wat anyone else to mistakingly delete. I then have spent time on setting up a sheet to track changes (just in case this has any bearing on the problem). This is the only thing that I think I have changed since protecting this morning and now I cannot unprotect the sheet. I have not protected the workbook and the unprotect sheet function is now greyed out.
Any ideas?
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