You can add a password to an Excel file to prevent unauthorized users from opening or modifying it.

How to protect an Excel file using a password to prevent unwanted access to your data.

Add a password to protect your entire workbook and control whether others can open or make changes to it. Protect your file by setting passwords for Open and Modify.

You can protect the Excel file by specifying two passwords: one to open, and the other to modify. You can later share the appropriate passwords with the team depending on the access they should be …

You can add a password to an Excel file to prevent unauthorized users from opening or modifying it.

To add a new password, click Protect Sheet or Protect Workbook, type and confirm the new password, and then click OK. To remove a password from the workbook, click Protect Workbook, and then click …

To prevent other users from accidentally or deliberately changing, moving, or deleting data in a worksheet, you can lock the cells on your Excel worksheet and then protect the sheet with a password.

To prevent other users from accidentally or deliberately changing, moving, or deleting data in a worksheet, you can lock the cells on your Excel worksheet and then protect the sheet with a password.

If you don't want content reviewers to accidentally change a Word document or an Excel spreadsheet, you can use formatting and editing restrictions. Note: To further restrict reviewers from making …

Sometimes passwords are needed to open files for comparison. Learn how to store those passwords.