On a computer that is running Microsoft Exchange Server 2010, the Exchange RPC Client Access service crashes. When this situation occurs, you find the following error is logged in the Application log.
Source: MSExchange Common
Event ID: 4999
Task Category: General
Level: Error
Description:
Watson report about to be sent for process id: <process ID>, with parameters: E12,
<build type>, <application Version>, RpcClientAccess, M.Exchange.RpcClientAccess.Handler,
M.E.R.H.RecipientTranslator.GetRecipientRow, System.NotSupportedException, <callstackHash>, <assembly Version>