WSus post installation failed in Win-19
Error WsusService.9 HmtWebServices.CheckDssAuthWebService DssAuth WebService WebException:System.Net.WebException: The request failed with HTTP status 400: Bad Request.
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at Microsoft.UpdateServices.Internal.DssAuthWebService.DssAuthWebService.Ping(Int32 pingLevel)
at Microsoft.UpdateServices.Internal.HealthMonitoring.HmtWebServices.CheckDssAuthWebService(EventLoggingType type, HealthEventLogger logger)
at Microsoft.UpdateServices.Internal.HealthMonitoring.HmtWebServices.CheckDssAuthWebService(EventLoggingType type, HealthEventLogger logger)
at Microsoft.UpdateServices.Internal.HealthMonitoring.HealthMonitoringTasks.ExecuteSubtask(HealthMonitoringSubtask subtask, EventLoggingType type, HealthEventLogger logger)
at Microsoft.UpdateServices.Internal.HealthMonitoring.HmtWebServices.Execute(EventLoggingType type)
at Microsoft.UpdateServices.Internal.HealthMonitoring.HealthMonitoringTasks.Execute(EventLoggingType type)
at Microsoft.UpdateServices.Internal.HealthMonitoring.HealthMonitoringThreadManager.Execute(Boolean waitIfNecessary, EventLoggingType loggingType)
at Microsoft.UpdateServices.Internal.HealthMonitoring.HealthMonitoringThreadManager.PeriodicTask()
at Microsoft.UpdateServices.Internal.HealthMonitoring.PeriodicTaskExecuter.ThreadStart()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()