{
"system": {
"provider": "MSExchange ADAccess",
"guid": "",
"event_source_name": "",
"event_id": 4027,
"version": 0,
"level": 2,
"task": 1,
"opcode": 0,
"keywords": 36028797018963968,
"time_created": "2026-05-08 18:09:49.326010+00:00",
"event_record_id": 833,
"correlation": {
"ActivityID": "",
"RelatedActivityID": ""
},
"execution": {
"process_id": 0,
"thread_id": 0
},
"channel": "Application",
"computer": "tel2-DC01-2022.ludus.domain",
"security": {
"user_id": ""
}
},
"event_data": {
"Data_0": "<string>ExSetup.exe</string>\n<string>7292</string>\n<string>Get Servers for ludus.domain</string>\n<string>TopologyClientTcpEndpoint (localhost)</string>\n<string>3</string>\n<string>System.ServiceModel.EndpointNotFoundException: Could not connect to net.tcp://localhost:890/Microsoft.Exchange.Directory.TopologyService. The connection attempt lasted for a time span of 00:00:04.0492850. TCP error code 10061: No connection could be made because the target machine actively refused it 127.0.0.1:890. ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 127.0.0.1:890\n at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)\n at System.Net.Sockets.Socket.Connect(EndPoint remoteEP)\n at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout)\n --- End of inner exception stack trace ---\n\nServer stack trace: \n at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout)\n at System.ServiceModel.Channels.BufferedConnectionInitiator.Connect(Uri uri, TimeSpan timeout)\n at System.ServiceModel.Channels.ConnectionPoolHelper.EstablishConnection(TimeSpan timeout)\n at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.OnOpen(TimeSpan timeout)\n at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)\n at System.ServiceModel.Channels.ServiceChannel.OnOpen(TimeSpan timeout)\n at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)\n\nException rethrown at [0]: \n at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)\n at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)\n at System.ServiceModel.ICommunicationObject.Open()\n at Microsoft.Exchange.Net.ServiceProxyPool`1.GetClient(Int32 retry, Boolean& doNotReturnProxyAfterRetry, Boolean useCache)\n at Microsoft.Exchange.Net.ServiceProxyPool`1.TryCallServiceWithRetry(Action`1 action, String debugMessage, WCFConnectionStateTuple proxyToUse, Int32 numberOfRetries, Boolean doNotReturnProxyOnSuccess, Exception& exception)</string>\n",
"Binary": ""
},
"message": ""
}