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.

To remove a password from an Excel spreadsheet or Workbook, follow these steps: Open the Excel spreadsheet and enter your password. Go to File > Info. Click on the Protect Workbook option.

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.