Error creating the Web Proxy specified in the 'system.net/defaultProxy' configuration section.

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[15-08-2015 2:32] System.Reflection.TargetInvocationException: An exception 
occurred during the operation, making the result invalid.  Check InnerException 
for exception details. ---> System.Net.WebException: An exception occurred 
during a WebClient request. ---> 
System.Configuration.ConfigurationErrorsException: Error creating the Web Proxy 
specified in the 'system.net/defaultProxy' configuration section. ---> 
System.Net.Sockets.SocketException: Żądany dostawca usług nie został 
załadowany lub zainicjowany
   at System.Net.NetworkAddressChangePolled..ctor()
   at System.Net.AutoWebProxyScriptEngine.AutoDetector.Initialize()
   at System.Net.AutoWebProxyScriptEngine..ctor(WebProxy proxy, Boolean useRegistry)
   at System.Net.WebProxy.UnsafeUpdateFromRegistry()
   at System.Net.Configuration.DefaultProxySectionInternal..ctor(DefaultProxySection section)
   at System.Net.Configuration.DefaultProxySectionInternal.GetSection()
   --- End of inner exception stack trace ---
   at System.Net.Configuration.DefaultProxySectionInternal.GetSection()
   at System.Net.WebRequest.get_InternalDefaultWebProxy()
   at System.Net.HttpWebRequest..ctor(Uri uri, ServicePoint servicePoint)
   at System.Net.HttpRequestCreator.Create(Uri Uri)
   at System.Net.WebRequest.Create(Uri requestUri, Boolean useUriBase)
   at System.Net.WebClient.GetWebRequest(Uri address)
   at System.Net.WebClient.DownloadStringAsync(Uri address, Object userToken)
   --- End of inner exception stack trace ---
   --- End of inner exception stack trace ---
   at System.ComponentModel.AsyncCompletedEventArgs.RaiseExceptionIfNecessary()
   at Procurement.Utility.VersionChecker.client_DownloadStringCompleted(Object sender, DownloadStringCompletedEventArgs e)

I have shutdown Anti-virus, i turned off firewall and its not working, any 
ideas?

Original issue reported on code.google.com by szczy...@gmail.com on 16 Aug 2015 at 1:02