Windows Server 2008 R2 & Wsus kurulumu

Merhaba,Bir Windows 2008 R2'e Wsus 3.0 SP2 (Version: 3.2.7600.274) yüklemeye çalışıyorum.

Connection : 
Type : Local/SSL
Port : 8530
User Role : Administrator
Server Version : 3.2.7600.274

fakak kurulumu tamamlayamıyorum.  Windows Server Update Services Vonfigration Wizard'da 
Choose Upstream Server başlığında Synchornize from Microsoft Update 'i seçiyorum. Proxy 'yok (Linux Firewall'de bu bilgisayarın IP adresine Full İnternet Çıkışı verdim). Start Connection dediğimde 2-3 dakika sonra " An HTTP error occurred. Details . . .) hatası alıyorum hata açıklaması.

WebException: The underlying connection was closed: An unexpected error occurred on a send. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
at System.Web.Services.Protocols.WebClientProtocol.GetWebResponse(WebRequest request)
at System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse(WebRequest request)
at Microsoft.UpdateServices.ServerSync.ServerSyncCompressionProxy.GetWebResponse(WebRequest webRequest)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at Microsoft.UpdateServices.ServerSyncWebServices.ServerSync.ServerSyncProxy.GetAuthConfig()
at Microsoft.UpdateServices.ServerSync.ServerSyncLib.InternetGetServerAuthConfig(ServerSyncProxy proxy, WebServiceCommunicationHelper webServiceHelper)
at Microsoft.UpdateServices.ServerSync.ServerSyncLib.Authenticate(AuthorizationManager authorizationManager, Boolean checkExpiration, ServerSyncProxy proxy, Cookie cookie, WebServiceCommunicationHelper webServiceHelper)
at Microsoft.UpdateServices.ServerSync.CatalogSyncAgentCore.SyncConfigUpdatesFromUSS()
at Microsoft.UpdateServices.Serve

Bilgisayar kendi Windows update çalıştırıyor ve patch 'leri yüklüyor. Windows firewall kapattım sonuç değişmedi.

konu hakkında yardımlarınızı rica ederim. Teşekkürler,