at System.Net.Security.NegoState.ThrowCredentialException(Int64 error)
   at System.Net.Security.NegoState.ProcessReceivedBlob(Byte[] message, LazyAsyncResult lazyResult)
   at System.Net.Security.NegoState.ReadCallback(IAsyncResult transportResult)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw(Exception source)
   at System.Net.Security.NegoState.EndProcessAuthentication(IAsyncResult result)
   at System.Net.Security.NegotiateStream.EndAuthenticateAsServer(IAsyncResult asyncResult)
   at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at CoreWCF.Channels.WindowsStreamSecurityUpgradeProvider.WindowsStreamSecurityUpgradeAcceptor.<OnAcceptUpgradeAsync>d__3.MoveNext()