I have nothing but problems with 2008 R2 XenApp 6, and CAC. My current setup is to run a batch file every 10 minutes: c:\mail\pskill /accepteula logonui net stop CtxSmartCardSvc net start CtxSmartCardSvc net stop CitrixCseEngine net start CitrixCseEngine net start server Yeah, seriously. ActivClient 6.2.0.119. This is in addition to rebooting every night. I would have left everything on 2003 and XenApp 4.5 if it weren't for Enterprise E-Mail. On Thu, May 24, 2012 at 9:25 AM, Steve Snyder <kwajalein@xxxxxxxxx> wrote: > I vaguely recall having something like this happen (2K8x64) seems like an > ACG patch was the final cure - seems like it was 128k oberthauer CACs that > were doing it > > On Thu, May 24, 2012 at 3:12 PM, Minero, Hector B CIV NSWCDD, K55 < > hector.minero@xxxxxxxx> wrote: > >> Hi all, >> I have some Windows 2008 R2 terminal servers that report the following >> errors when any user tries to log in: >> >> The system could not log you on. An error occurred trying to use this >> smart card. You can find >> further details in the event log. Please report this error to the System >> Administrator. >> >> This happens every few days, and the only thing that can fix it is a >> reboot. >> Has anyone seen this error before? Hopefully there are some admins on >> this list that are using Smart Card logons. >> >> Thanks, >> >> Hector Minero >> > >