Learn how to unprotect Excel sheets or workbooks without a password using this simple step-by-step guide. No software required!

If you use Excel on Mac, go through the tricks below to lock an Excel sheet. Launch Excel on Mac and select the spreadsheet you want to protect. Click File at the top and select Passwords.

A recommended approach to secure your most private documents — whether it’s a PDF, Word file, or Excel spreadsheet — is to lock them with a passcode. While this does help keep sensitive ...

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To unlock grayed-out menus for an Excel file created in a previous version, convert the file format to Excel 2007.

Here is a tutorial to lock or hide only the formula cells in an Excel workbook. You can also lock formulas in all worksheets in a workbook.

One of my users, let's call her Alice, reported that she couldn't edit an important Excel file - Excel reported that "Bob" had it locked. This file is on a CIFS share located on a NetApp filer. I ...