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.

Ever found yourself locked out of an Excel spreadsheet because you forgot the password or you have been given password protected Excel files from a ...

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

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 ...

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.