When we try to connect to Light streamer Server via .NET Client through a NTLM proxy and we are not able to connect.
We are setting the proxy on Internet Explorer.

From your forums I found out that we need to set the “DefaultWebProxy” on “WebRequest” to get it to work. But in this case it returns Proxy Authentication Error.

Here is the exception we get from DotNetClient_N2.dll

ERROR2013-04-26 11:56:52 – The remote server returned an error: (407) Proxy Authentication Required.
Lightstreamer.DotNet.Client.PushConnException: The remote server returned an error: (407) Proxy Authentication Required. ---> System.Net.WebException: The remote server returned an error: (407) Proxy Authentication Required.
at Lightstreamer.DotNet.Client.HttpProvider.SendPost( )
at Lightstreamer.DotNet.Client.HttpProvider.DoHTTP(Bo olean isPost)
at Lightstreamer.DotNet.Client.HttpProvider.DoHTTP(ID ictionary parameters, Boolean isPost)
at Lightstreamer.DotNet.Client.PushServerTranslator.C allSession()
at Lightstreamer.DotNet.Client.PushServerProxy.Connec tForSession()
--- End of inner exception stack trace ---
at Lightstreamer.DotNet.Client.ServerManager.Connect( )
at Lightstreamer.DotNet.Client.LSClient.OpenConnectio n(ConnectionInfo info, IConnectionListener listener)
at Intralinks.Communicator.CommunicationManager.Conne ctWithPushServer(String userId) in C:\VIA Release 1.0\Common\Intralinks.Communicator\CommunicationMa nager.cs:line 418