WCF EndpointNotFoundException when connecting to

System.ServiceModel.EndpointNotFoundException: Could not connect to the remote endpoint 18775299031

Server stack trace:

  at System.ServiceModel.Channels.SocketConnectionInitiator.Connect(Uri uri, TimeSpan timeout)

  at System.ServiceModel.Channels.ConnectionPoolHelper.EstablishConnection(TimeSpan timeout)

  at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.OnOpen(TimeSpan timeout)

Exception rethrown at [0]:

  at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)

  at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)

Inner Exception:

System.Net.Sockets.SocketException (10060): A connection attempt failed because the connected party 18775299031 did not respond

at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)

--- End of inner exception stack trace ---