You can add or remove a password from your Excel spreadsheets through the File tab. You'll do it slightly differently on a Mac and PC.

There are several options available to you to protect your Excel file with a password. Remember that once you protect the Excel file, you cannot open it without entering the password.

If you want to set an expiration date and password when sharing Excel files online, here is how you can do that. It is possible to do both of them when using Excel Online.

Key Takeaways : Excel spreadsheets can be protected by Edit Ranges, Sheet Protection, Workbook Protection, File Modify Password, VBA Project Password, and File Open Password.