I am running exchange Win 2k Server and it suddenly locked up. It wouldn't even let me TS in to reboot. I checked the logs after I bounced it and I found event id 2000, The server's call to a system service failed unexpectedly. I have found numrous articles on NT, but none on 2000 server. It is very crucial to find out what this means. I have thousands of users that depend on me. Appreciate it.