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 content safe, ...

Enter the password and note it in a secure place. How to password protect an Excel workbook Your email has been sent At the file level, you can password protect an ...

If you don't have access to the password, you can click on the "Preview" option to open the password-protected MS Office file ...