Restrict folder access in Group Policy Editor

               In Group Policy Editor you can restrict folder access by disabling Simple File Sharing and then right-clicking the folder you would like to protect and selecting 'Properties'. Move to the 'Security' tab and you're ready to restrict folder access.

            Now 'Add' and then select the user you would like to restrict. Tick the top box in the 'Deny' column to prevent the selected user from accessing, viewing or modifying the files in the folder you selected.