This is just a new Word installation added to a solution that was working correctly? I don't really recall what is supposed to happen during the activation step, but presumably the remote server it is talking about is the Agenda Manager server. The components of Agenda Manager communicate using DCOM, so if there seems to be a communication problem, that's what you'll be looking for in network logs, etc. Here's a guide about DCOM and firewall rules - it's about a different product but it's from a good source.