Are these servers NT4 or Windows 2000/2003?. If they are 2000 or above, go into terminal services configuration and change your permission compatibility mode to Full Security. This will stop them from installing programs. You may have to tweak some registry key's security for some existing programs so that they continue to work. But fixing that is trivial if you use regmon. -----Original Message----- From: Jim Abshire [mailto:Jim.Abshire@xxxxxxxxxxx] Sent: Wednesday, September 08, 2004 3:54 PM To: thin@xxxxxxxxxxxxx Subject: [THIN] Users installing programs I have a question, I work for a property management company and we provide Internet via Citrix to students. I have tried desperately to lock down the servers but they seem to still be able to install Internet based programs, (e.g. AOL instant messenger, Poker Party, etc) to name a few. Is there a way to lock the server down tight so this cannot continue without prohibiting the users to run necessary programs such as Office? Jim Abshire Network Administrator Dinerstein Management 713-570-0373