"Invalid user context cookie found in proxy response" error message and an event ID 4999 occur when you use an Exchange 2010 SP2 RU1 CAS server as a proxy to an Exchange 2007 CAS server
- You configure a server that is running Microsoft Exchange Server 2010 Service Pack 2 (SP2) as a Client Access server (CAS).
- The server that is running Exchange Server 2010 SP2 is used as a proxy to a server that is running Microsoft Exchange Server 2007.
- You install Microsoft Exchange Server 2010 SP2 Update Rollup 1 (RU1) on the proxy server.
Event ID: 4999
Log Name: Application
Source: MSExchange Common
Task Category: General
Description: Watson report about to be sent for process id: 744, with parameters: E12, c-RTL-AMD64, 14.02.0283.003, OWA, M.E.Clients.Owa, M.E.C.O.C.ProxyUtilities.UpdateProxyUserContextIdFromResponse, M.E.C.O.Core.OwaAsyncOperationException, 413, 14.02.0283.003.
Article ID: 2696649 - Last Review: 06/21/2014 17:19:00 - Revision: 4.0
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