I am little lost, tried different things, but cannot seem to get it working. 
Here is what Log is saying:
12/03/2018 09:08:07 *******************************************************************
Error: Soap Exception ( mesg-id = 636564424871336456 )
Exception: WebServiceError [8005] (XXXXXXX)
Stacktrace: at Connectivity.Server.Proxies.ServiceAccessor`3.Execute(String remoteServer, Action`1 action)
at Connectivity.Filestore.AuthenticationService.CreateSession(AuthCredentials creds, String dataServer, String knowledgeVault, LicenseMode licenseMode, Boolean isLicensed, Byte[] p, SecurityHeader oldSession)
at Connectivity.Web.Filestore.v23.AuthService.SignIn(String dataServer, String userName, String userPassword, String knowledgeVault)
at SyncInvokeSignIn(Object , Object[] , Object[] )
at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs)
at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)
Exception(Inner): There was no endpoint listening at http://XXXXXXX/AutodeskDM/Services/_impl/SiteService.svc that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details.
Stacktrace(Inner):
Server stack trace:
at System.ServiceModel.Channels.HttpOutput.WebRequestHttpOutput.GetOutputStream()
at System.ServiceModel.Channels.HttpOutput.Send(TimeSpan timeout)
at System.ServiceModel.Channels.HttpChannelFactory`1.HttpRequestChannel.HttpChannelRequest.SendRequest(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
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 Connectivity.Server.Proxies.SiteService.SiteService.SignInSite2(SignInSite2Request request)
at Connectivity.Server.Proxies.SiteAuthenticator.SignIntoSite(String remoteServer, String vaultname)
at Connectivity.Server.Proxies.ServerTokenCache.Get(Lazy`1 authenticator, String remoteServer, IResourceStore vault, SecurityHeader expiredToken)
at Connectivity.Server.Proxies.ServiceAccessor`3._service(String remoteServer, Boolean reSignin)
at Connectivity.Server.Proxies.ServiceAccessor`3.tryexecute(String remoteServer, Action`1 action, Int32 attemptCount)
at Connectivity.Server.Proxies.ServiceAccessor`3.Execute(String remoteServer, Action`1 action)
Exception(Inner): Unable to connect to the remote server
Stacktrace(Inner): at System.Net.HttpWebRequest.GetRequestStream(TransportContext& context)
at System.Net.HttpWebRequest.GetRequestStream()
at System.ServiceModel.Channels.HttpOutput.WebRequestHttpOutput.GetOutputStream()
Exception(Inner): A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond XXXXXXX
Stacktrace(Inner): 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)