How to password protect an Excel file?

[Elias]

I am looking for a clear guide on how to password protect an Excel file to secure sensitive data. I use Microsoft Excel regularly and want to prevent unauthorized access. Please explain the steps for both Windows and Mac versions if possible. Any best practices would also be helpful.

 

[Gdinscecar]

To password-protect an Excel file:

• Open the file → File → Info → Protect Workbook → Encrypt with Password.
• Enter a password, confirm it, and save the file.

Now, the file will require a password to open.

 

[Kian]

Open the Excel file, go to File > Info > Protect Workbook > Encrypt with Password, enter a strong password, and confirm it. Save the file. The workbook will now require the password to open and edit securely.

 

[Monika]

I’ve been doing this with Excel’s built-in “Protect Workbook” feature
just go to File → Info → Protect Workbook → Encrypt with Password. Super simple, and it locks the file instantly. Make sure you remember the password, because there’s no recovery.