System.Net.WebException: Запрос был прерван: Не удалось создать защищенный канал SSL/TLS.
     в System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)

Version:
  V3
Signature algorithm:
  GOST R 34.11/34.10-2001
Public key:
  GOST R 34.10-2001 (512 Bits)
Valid from:
  Thursday, March 26, 2009
Valid to:
  Friday, March 26, 2010
Enhanced Key Usage:
  Пользователь Центра Регистрации, HTTP, TLS клиент (1.2.643.2.2.34.6)
  Client Authentication (1.3.6.1.5.5.7.3.2)
  Secure Email (1.3.6.1.5.5.7.3.4)
Key Usage:
  Digital Signature, Non-Repudiation, Key Encipherment, Data Encipherment (f0)
Thumbprint algorithm:
  sha1

{Не удалось установить безопасный канал для SSL/TLS с полномочиями "site.ru:8443".}
{"Запрос был прерван: Не удалось создать защищенный канал SSL/TLS."}
Server stack trace: 
   в System.ServiceModel.Channels.HttpChannelUtilities.ProcessGetResponseWebException(WebException webException, HttpWebRequest request, HttpAbortReason abortReason)
   в System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout)
   в System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout)
   в System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout)
   в System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
   в System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs)
   в System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
   в System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

Exception rethrown at [0]: 
   в System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   в System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   в soapClient.siteServices.siteAutoRegServiceInterface.registrationPackage(registrationPackageRequest request)
   в soapClient.siteServices.RUCAutoRegServiceInterfaceClient.registrationPackage(registrationPackageRequest request) в C:\distr\doc\coding\c#\soapClient\soapClient\Service References\siteServices\Reference.cs:строка 375
   в soapClient.Form1.button1_Click(Object sender, EventArgs e) в C:\distr\doc\coding\c#\soapClient\soapClient\Form1.cs:строка 66
   в System.Windows.Forms.Control.OnClick(EventArgs e)
   в System.Windows.Forms.Button.OnClick(EventArgs e)
   в System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   в System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   в System.Windows.Forms.Control.WndProc(Message& m)
   в System.Windows.Forms.ButtonBase.WndProc(Message& m)
   в System.Windows.Forms.Button.WndProc(Message& m)
   в System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   в System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   в System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   в System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   в System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
   в System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   в System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   в System.Windows.Forms.Application.Run(Form mainForm)
   в soapClient.Program.Main() в C:\distr\doc\coding\c#\soapClient\soapClient\Program.cs:строка 13
   в System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
   в System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
   в Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
   в System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   в System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   в System.Threading.ThreadHelper.ThreadStart()