I am running Exchange Server 5.5 on a NT 4.0 Server. My workstation is a W2K machine. I loaded the exchange administrator on my w/s. When I try to connect to the server, I get the following error. A connection could not be made to the Microsoft Exchange Server Computer 'server'. The Microsoft Exchange Server does not respond. Microsoft Exchange Directory ID no: DS_E_COMMUNICATIONS_PROBLEM I read up on problems involving encryption that required certain patches to be applied. Those patches are on the server. Any advice would be appreciated.