While uninstalling Exchange Server 2003 (after a successfull migration to Exchange Server 2010) I ran into the dreaded “The server cannot be removed because” issue:
The server <servername> cannot be removed because:
– One or more users currently use a mailbox store on this server. These users must be moved to another mailbox store on a different server or be mail disabled before uninstalling this server.
Facility: Exchange System Manager
ID no: c103f492