Although more secure than right-clicking a tab and clicking "Hide," making a worksheet very hidden isn't a fail-safe method ...

Are you unable to delete a sheet from a workbook in Microsoft Excel? Some users report that they just can’t delete worksheets in a workbook. Either the Delete Sheet option is greyed out or it ...

The company has also made it easy to remove those protections. Here's how to unprotect a Microsoft Excel worksheet. Read more ...