We have see this before with TS in remote admin mode and we tracked it down to NAV. Checkout this article and see if it relates to your problem: http://service1.symantec.com/SUPPORT/ent-security.nsf/529c2f9adcf33a1088 256e22005026f1/10eaa5fc1148e6f888256bf40056e227?OpenDocument&prod=Symant ec%20AntiVirus%20Corporate%20Edition&ver=9.0&src=ent&pcode=sav_ce&dtype= corp&svy=&prev=&miniver=savce_9.0 Also, what is the BSOD code if any given? Mike Bollman Network Engineer Enterprise Products mbollman@xxxxxxxxx ________________________________ From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of David Finch Sent: Monday, March 14, 2005 4:09 PM To: thin@xxxxxxxxxxxxx Subject: [THIN] Terminal Services causing machines to reboot..... I need some help and I'm wondering if anyone has seen this one. We have had one of our servers start acting up last week. EVERY time someone tries to connect to it via TS or Citrix it does a dirty shutdown and reboots - basically as soon as they try to connect (i.e. they don't even get the login screen). Stopping the Terminal Services service prevents the reboots, but makes it useless as a Terminal Server (obviously!) We restored the Registry and System files from backup and it was fine for another 4 days when it started doing it again - same problem - same solution. I can't see any obvious registry changes (we did a "before and after" comparison) and the event logs show nothing other than the server recovering from an unexpected shutdown. The box has previously been running for 18 months without a problem, and there are no changes that I am aware of that we have made to it. Server is a HP DL380 running Win2K/SP3 + Metaframe XP FR3 I'm going to upgrade from W2K SP3 to SP4, but does anybody have any other suggestions as to what might be causing it. David