Remote callback channel times out with SessionKeyExpiredException

[ryannewington]

An exception has occurred in NotifySubscribersOnStatusChange
Type: System.ServiceModel.Security.SessionKeyExpiredException

Message: The session key must be renewed before it can secure application messages.
Source: mscorlib
TargetSite: Void HandleReturnMessage(System.Runtime.Remoting.Messaging.IMessage, System.Runtime.Remoting.Messaging.IMessage)
StackTrace:

Server stack trace: 
   at System.ServiceModel.Security.SecuritySessionServerSettings.ServerSecuritySessionChannel.CheckOutgoingToken()
   at System.ServiceModel.Security.SecuritySessionServerSettings.ServerSecuritySessionChannel.SecureApplicationMessage(Message& message, TimeSpan timeout, SecurityProtocolCorrelationState correlationState)
   at System.ServiceModel.Security.SecuritySessionServerSettings.ServerSecurityDuplexSessionChannel.Send(Message message, TimeSpan timeout)
   at System.ServiceModel.Dispatcher.DuplexChannelBinder.Send(Message message, 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)

Exception rethrown at [0]: 
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at Lithnet.Miiserver.AutoSync.IEventCallBack.MAStatusChanged(MAStatus status)
   at Lithnet.Miiserver.AutoSync.EventService.NotifySubscribersOnStatusChange(MAStatus status)
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