Desktop Integration/wtWindows is descreasing performance because of continues attempt to connect to an remote machine who actively refused it on Windchill 12.0.2

• Desktop Integration/wtWindows is descreasing performance because of continues attempt to connect to an remote machine who actively refused it

02:41:09:834 PM	**************** ERROR ****************
[wtWindows-WTWindows.42-ActionQueue] System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 127.0.0.1:1434
   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
   at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception)
   --- End of inner exception stack trace ---

Server stack trace: 
   at System.Net.HttpWebRequest.GetRequestStream(TransportContext& context)
   at System.Net.HttpWebRequest.GetRequestStream()
   at System.Runtime.Remoting.Channels.Http.HttpClientTransportSink.ProcessAndSend(IMessage msg, ITransportHeaders headers, Stream inputStream)
   at System.Runtime.Remoting.Channels.Http.HttpClientTransportSink.ProcessMessage(IMessage msg, ITransportHeaders requestHeaders, Stream requestStream, ITransportHeaders& responseHeaders, Stream& responseStream)
   at System.Runtime.Remoting.Channels.SoapClientFormatterSink.SyncProcessMessage(IMessage msg)

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)
   at ParametricTechnology.Windchill.Msoi.WTOffice.Connections.Office12.ClientConnection_ExecuteLocalAction(String Action, Boolean& NotFound, Boolean& ErrorStop, String FilePath, SafeCollection AdditionalParams)
   at ParametricTechnology.Windchill.Msoi.WTWindows.ClientConnection.raise_ExecuteLocalAction(String Action, Boolean& NotFound, Boolean& ErrorStop, String FilePath, SafeCollection AdditionalParams)
**************** END ERROR ****************