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 >