具体内容如下: Process MSExchangeHMWorker.exe (ExHMWorker) (PID=9120). WCF request (Get Servers for zrgcorp.cn) to the Microsoft Exchange Active Directory Topology service on server (TopologyClientTcpEndpoint (localhost)) failed. Make sure that the service is running. In addition, make sure that the network ports that are used by Microsoft Exchange Active Directory Topology service are not blocked by a firewall. The WCF call was retried 3 time(s). Error Details System.ServiceModel.EndpointNotFoundException: 无法连接到 net.tcp://localhost:890/Microsoft.Exchange.Directory.TopologyService。连接尝试持续了 00:00:02.0021466 时间跨度。TCP 错误代码 10061: 由于目标计算机积极拒绝,无法连接。 127.0.0.1:890。 ---> System.Net.Sockets.SocketException: 由于目标计算机积极拒绝,无法连接。 127.0.0.1:890 在 System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) 在 System.Net.Sockets.Socket.Connect(EndPoint remoteEP) 在 System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout) --- 内部异常堆栈跟踪的结尾 ---