In my environment Windows server 2012 is configured along with Active Directory. I want to block only the usb flash drives for some users only. for that i went to the group policy management -user configuration-policies-administrative templates-system-Removable Storage Access- selected removable disks deny read access- enabled & removable disks deny write access-enabled.
But still the users can access their flash drives. How can i disable only the flash drives through group policy