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.

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 use a computer, you probably have some Microsoft Excel documents on your Mac or PC that you wouldn’t want other people to find and read. After all, Excel serves not only the average person, but ...

Excel allows you to lock specific areas of a sheet with a password or protect the entire workbook. You can also set an Excel file to open in read-only mode and ...