File screening not taking effect

Robbo777

Hi, i'm trying to impose a file screening that will block audio and video files on a certain folder so clients cant upload them. I have set a 100mb limit on the folder which has worked and set a file screening that blocks the aforementioned audio and video files. I have put the screening on the same directory as the 100mb limit and a user can still copy video and audio files into the folder but strangely enough, the admin on the domain controller cant upload audio or video files to it. So it is working but just not for the clients who can still upload what they want to it.