Crash occurs in the Autodiscover application pool in an Exchange Server 2010 environment

Applies to: Exchange Server 2010 EnterpriseExchange Server 2010 Standard


When the Autodiscover service detects an authentication error in a Microsoft Exchange Server 2010 environment or in another environment, a crash occurs in the Autodiscover application pool. Additionally, Event ID 4999 is logged. The following is a sample of the event that is logged when this issue occurs:
Time:    Time
ID:       4999
Level:    Error
Source: MSExchange Common
Machine:  Machine Name
Message:  Watson report about to be sent for process id: Process ID, with parameters: E12, c-RTL-AMD64, 14.02.0247.005, AutoDisc, M.Exchange.Autodiscover, M.E.A.W.LegacyErrorHandler.HandleError, S.S.Diagnostics.CallbackException, 7eb3, 14.02.0247.003.
ErrorReportingEnabled: True


This issue occurs because the System.ServiceModel.Diagnostics.CallbackException function in the Microsoft.Exchange.Autodiscover.WCF.LegacyErrorHandler.ReportException function stops responding.


To resolve this issue, install the following update rollup:
2685289 Description of Update Rollup 3 for Exchange Server 2010 Service Pack 2


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.