NtServer4.0 running as a BDC with Exchange 5.5 It appears that when exchange starts after a reboot that the following two things occur. In the Event Log there is a entry Event id: 1000 Source Userenv Type Error The operating System was unable to load your profile. Please Contact your Network adminstrator. Under the Winnt/Profiles directory it sequentially creates a folder called system.000, system.001, system.002, ........ I am guessing that the system account on the NT server is generating these messages and I have seen some posts that lay the Blame on exchange. Has anyone seen this problem and does anyone know the fix. Regards PaulW