I'm running exchange 2000 and when i try to access the "Client permissions" tab in ESM, i get an error of- "The information store could not be opened. The logon to the Microsoft Exchange Server computer failed. Mapi 1.0 ID no: 80040111-0286-000000000 ID no: c1050000" My account has Full Exchange Admin rights on the org and is also a Domain Admin. Under "administrative permissions", i have Full Control". In PFDavAdmin, I have the owner client role on the folder. Does anyone know what could be going on here? Thanks alot.