Hi friends,
I know the code to restrict the user to edit/delete the workbook after a particular date mentioned in the code. I observered that if the user changed the pc date then the file is editable. So I think to restrict the user after particular days for example after 15 days rather than the date after 15 days. I want a pop up message "The workbook is expired." after 15 days. To restrict the user I want to protect a workbook with a password.

If it is possible then please do suggest me a code.

Thanking you in anticipation.