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I don't know if you can completely prevent it but you can make it harder. You need to do two settings. Go to group policy /User Configuration/Administrative Templates/Control Panel Enable the "Hide specified Control Panel applets" and add the mmsys.cpl applet This will remove the sound settings control panel item for the users. They won't be able to adjust the volume or mute the system from there. Now go to group policy /User Configuration/Administrative Templates/Start Menu and Taskbar Enable the "Hide the notification area" This hides the little volume icon and everything else by the clock on the taskbar. They won't be able to adjust the volume or mute the system from there either. The down side of this is the user can't adjust the volume level at the OS level. If you speakers have a volume knob then they can change it. Also I don't know if this has any effect on a multimedia keyboard with volume and mute buttons. -----Original Message----- From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of Al Puzzuoli Sent: Tuesday, July 10, 2007 9:43 AM To: [log in to unmask] Subject: Disable muting of the Sound Card via Group Policy? Hi, Just wondering whether there is a way to prevent the ability to mute the sound card via Group Policy? Thanks in advance for any info, Al Puzzuoli Information Technologist Resource Center for Persons with Disabilities 517-353-9642 ext. 239 120 Bessey Hall East Lansing, MI 48824-1033 http://www.rcpd.msu.edu