Cannot Authenticate with Proxy Server

[Kevin L]

I am trying to use HTTPWebRequest from my application, but I cannot seem to
authenticate with my proxy server.

My GetResponse statement fails with an Error 407, "Proxy Authentication
Required". I am trying to use my default windows credentials which are used
by Internet Explorer. I have also manually supplied credentials with no
luck. This code was downloaded from a Microsoft web page.

Here is my code:

Dim strURL As String
strURL = "http://www.microsoft.c om"

Dim wrGETURL As WebRequest
wrGETURL = WebRequest.Crea te(strURL)

'Use default proxy settings from Internet Explorer
wrGETURL.Proxy = WebProxy.GetDef aultProxy()
wrGETURL.Creden tials = CredentialCache .DefaultCredent ials

Dim objStream As Stream
objStream = wrGETURL.GetRes ponse.GetRespon seStream()

Dim objReader As New StreamReader(ob jStream)
Dim strLine As String = ""
Dim intI As Integer = 0

Do While Not strLine Is Nothing
intI += 1
strLine = objReader.ReadL ine
If Not strLine Is Nothing Then
Console.WriteLi ne("{0}:{1}", intI, strLine)
End If
Loop