|Message:||An unexpected MAPI error occurred. Error returned was [<error code>].|
This event can occur when attempting to start the Microsoft Exchange Event service. It means that the service could not be started because an unexpected error was encountered. The Error Code in the Description section of the event can be converted to a readable message using the ERROR.EXE program included on the Exchange Server CD ROM. This error code will usually provide information as to the underlying cause of the problem.
This issue can be seen if there are multiple “EventConfig_(Servername)” folders or if the “EventConfig_(ServerName)” folder is not replicated to the Exchange Server named “ServerName.”
Try the following steps to resolve this issue: