Event ID 1000 Faulting application lsass.exe, version 5.2.3790.0, faulting module lsasrv.dll, version 5.2.3790.4455, fault address 0x0001a30b.anyone ran in to this before? Exchange 2003 Enterprise with Sp2 loaded. It rebooted itself 30 seconds later with a winlogon event any help is much appreciated.Thanks A critical system process, C:\WINDOWS\system32\lsass.exe, failed with status code c0000006. The machine must now be restarted.

LSASS.EXE is windows component probably your server is infected by virus check if yiu have applied below patch Microsoft Security Bulletin MS04-011 http://www.microsoft.com/technet/se...n/MS04-011.mspx Vinod |CCNA|MCSE 2003 +Messaging|MCTS|ITIL V3|

as Vinod sad your server is infected by viruswhile it counting from 30 sec. go start-->Run-->cmd-->type (Shutdown -a)it will cancel restart progress.MCSE,CCNA,VCP,APP