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3,157Suddenly, from what appears to be out of nowhere, we have started to see an SSPI error on our Sharepoint/EP Server. I can't seem to find any cause but it is not causing us to reboot this server once ever couple of days so that EP can be used. Any ideas on what this might be?
An unexpected exception occurred in the Microsoft Dynamics AX report viewer control. Contact your system administrator for assistance.
A call to SSPI failed, see inner exception.
Microsoft.Dynamics.AX.Framework.Services.Client.UserSessionServiceException
at Microsoft.Dynamics.AX.Framework.Services.Client.ServiceClientHelper.InvokeChannelOperation[TResult,TChannel](IServiceClient`1 client, Func`2 operationInvoker, Func`2 exceptionWrapper)
at Microsoft.Dynamics.AX.Framework.Services.Client.UserSessionClient.GetAccessRights(IEnumerable`1 keys)
at Microsoft.Dynamics.Framework.Portal.UI.WebControls.WebParts.ReportMenuItemHelper.HasAccess(MenuItemKey menuItemKey)
at Microsoft.Dynamics.Framework.Portal.UI.WebControls.WebParts.AxReportViewerInternal.HasAccessToOutputMenuItemIfRequired()
at Microsoft.Dynamics.Framework.Portal.UI.WebControls.WebParts.AxReportViewerInternal.CanPreRender()
at Microsoft.Dynamics.Framework.Portal.UI.WebControls.WebParts.AxReportViewerInternal.OnPreRender(EventArgs e)
A call to SSPI failed, see inner exception.
System.ServiceModel.Security.SecurityNegotiationException
Server stack trace:
at System.ServiceModel.Channels.WindowsStreamSecurityUpgradeProvider.WindowsStreamSecurityUpgradeInitiator.OnInitiateUpgrade(Stream stream, SecurityMessageProperty& remoteSecurity)
at System.ServiceModel.Channels.StreamSecurityUpgradeInitiatorBase.InitiateUpgrade(Stream stream)
at System.ServiceModel.Channels.ConnectionUpgradeHelper.InitiateUpgrade(StreamUpgradeInitiator upgradeInitiator, IConnection& connection, ClientFramingDecoder decoder, IDefaultCommunicationTimeouts defaultTimeouts, TimeoutHelper& timeoutHelper)
at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.SendPreamble(IConnection connection, ArraySegment`1 preamble, TimeoutHelper& timeoutHelper)
at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.DuplexConnectionPoolHelper.AcceptPooledConnection(IConnection connection, TimeoutHelper& timeoutHelper)
at System.ServiceModel.Channels.ConnectionPoolHelper.EstablishConnection(TimeSpan timeout)
at System.ServiceModel.Channels.ClientFramingDuplexSessionChannel.OnOpen(TimeSpan timeout)
at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.OnOpen(TimeSpan timeout)
at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.CallOnceManager.CallOnce(TimeSpan timeout, CallOnceManager cascade)
at System.ServiceModel.Channels.ServiceChannel.EnsureOpened(TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
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