If you have sensitive data you'd like to keep from prying eyes in a Microsoft Excel file, the easiest way to protect it is with Excel's built-in password tools.

Sending Excel files containing crucial financial and business data has risks. To add a layer of protection, you should learn to password protect an Excel file.

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.

You can also remove the password at any time. Read on to learn how to set and remove a password from your Excel spreadsheet, on both PC and Mac.

How to remove a password from an Office document How to set a password for an Office document To add an encryption password to Microsoft Word, Excel, or PowerPoint, use these steps: ...

You can lock cells in Excel by heading into the program's "Protection" tab. There, you can set a password, and protect your data.