I have encountered a problem for which I would truly appreciate to get some
help. I am running Exchange 5.5 with service pack 4 on Windows NT 4.0.
PROBLEM: The Event Service does not start and the following entry appears on
the event log:
Description: "An unexpected MAPI error occurred. Error returned was
I have searched Microsoft's site for "0x80040604" but it returns no match.
I found some matches when searching for "An unexpected MAPI error occurred",
but the messages are related to other error codes such as 0x80004005,
0x80004001, 0x80040154 and these errors are unrelated. I have uninstalled
and installed Exchange again with the service pack 4 (I think I've seen this
problem before with serv. pack 3 and the fix) and I get the same problem.
Any suggestion or help to this problem will be appreciated!