You can have Excel make a spreadsheet in read only format for others, so that people can read its contents but not edit them, or you can enforce other content restrictions.

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 the "Read-only recommended" box isn't checked when you set up the workbook with a password to open the file, Excel won't prompt with a message. Instead, the workbook simply opens to the last ...

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.

Learn how to unprotect Excel sheets or workbooks without a password using this simple step-by-step guide. No software required!

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.