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.

If you have Excel spreadsheets with sensitive data, you can easily lock and unlock them Here's what you need to do.

In Microsoft Excel, each cell is locked automatically. In enabling protection of a spreadsheet, it will often be faster to unlock everything and then re-enable the lock on chosen cells.

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 ...

Want to protect an important Word document or Excel spreadsheet? Here's how to add a password, make documents read-only, and tap into other tricks to safeguard sensitive files.

Forgot your PDF password? Unlock PDF, Word & Excel files securely using Wondershare Dr.Fone. Multiple decryption methods ensure fast, safe access to your documents. Try it now!