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.

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 …

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

Excel gives you the ability to protect your work, whether it’s to prevent someone from opening a workbook without a password, granting Read-Only access to a workbook, or even just …

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.

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.

Select Protect Sheet to change to Unprotect Sheet when a worksheet is protected. If prompted, enter the password to unprotect the worksheet. Select the whole worksheet by selecting …

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. …

Set permission levels manually. On the Review tab, under Protection, select Permissions, and then select Restricted Access. If this is the first time that you are accessing the licensing …