Problem with Exchange Server 2016 - MSExchange Availability

Copper Contributor

Hello

 

We have 2 Exchange Server (DAG with MBS). We always get the Eventid 4002:

 

Process 836: ProxyWebRequest CrossSite from S-1-5-21-3814888480-1449635806-2613578883-16147 to https://server02.melecs.local:444/ews/exchange.asmx failed. Caller SIDs: NetworkCredentials. The exception returned is Microsoft.Exchange.InfoWorker.Common.Availability.ProxyWebRequestProcessingException: Proxy web request failed. ---> System.Net.WebException: The request was aborted: The request was canceled.
at System.Web.Services.Protocols.WebClientAsyncResult.WaitForResponse()
at System.Web.Services.Protocols.WebClientProtocol.EndSend(IAsyncResult asyncResult, Object& internalAsyncState, Stream& responseStream)
at System.Web.Services.Protocols.SoapHttpClientProtocol.EndInvoke(IAsyncResult asyncResult)
at Microsoft.Exchange.InfoWorker.Common.Availability.Proxy.Service.EndGetUserAvailability(IAsyncResult asyncResult)
at Microsoft.Exchange.InfoWorker.Common.Availability.FreeBusyApplication.EndProxyWebRequest(ProxyWebRequest proxyWebRequest, QueryList queryList, IService service, IAsyncResult asyncResult)
at Microsoft.Exchange.InfoWorker.Common.Availability.ProxyWebRequest.EndInvoke(IAsyncResult asyncResult)
at Microsoft.Exchange.InfoWorker.Common.Availability.AsyncWebRequest.EndInvokeWithErrorHandling()
--- End of inner exception stack trace ---
. Name of the server where exception originated: Server01. LID: 43532. Make sure that the Active Directory site/forest that contain the user's mailbox has at least one local Exchange 2010 server running the Availability service. Turn up logging for the Availability service and test basic network connectivity.

 

Do everyone know what I can do to solve this problem?

 

Thanks

Regards

Andreas

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