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.

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

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 …

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.

Additionally, you can also specify a password to lock your worksheet. A password prevents other people from removing the worksheet protection—it needs to be entered to unprotect the sheet. …

Go to File > Info > Protect Document > Encrypt with Password. Type a password, press OK, type it again and press OK to confirm it. Save the file to make sure the password takes effect.

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 …

If you're using the commands on the Inquire tab in Excel to analyze or compare workbooks that are password-protected, you can avoid having to type the password each time those files are …

You cannot open a workbook or document that has been password protected in the Windows-based version of Excel or Word if the password is longer than fifteen characters. If you want to …