AutoDiscover Exchange 2010

All of a sudden users started getting the "allow this website to configure" dialog box popping up in Outlook. Also Users were unable to turn off their Out of Office assistant getting the error "your automatic reply settings cannot be displayed because the server is currently unavailable. try again later". On top of that when you open a new email box we get "mailtips could not be retrieved." I looked through my event log and the application is filled with "Event Id 3, System.ServiceModel 3.0.0.0" Any help would be greatly appreciated.
reindeerautoAsked:
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reindeerautoConnect With a Mentor Author Commented:
Uninstalling the updates has fixed the problem.
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Simon Butler (Sembee)ConsultantCommented:
What has changed?
A response of nothing is not allowed, because something has changed.
Autodiscover is working in a different way, which would point to either a web site or DNS modification.
The detail you have posted of the event log entry isn't enough - you need to post the full entry.

Simon.
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reindeerautoAuthor Commented:
I have changed nothing in the nework, it literally worked yesterday and is not working correctly today. I have attached the entire event log entry.


WebHost failed to process a request.
 Sender Information: System.ServiceModel.ServiceHostingEnvironment+HostingManager/42931033
 Exception: System.ServiceModel.ServiceActivationException: The service '/EWS/Exchange.asmx' cannot be activated due to an exception during compilation.  The exception message is: Method not found: 'System.String System.ServiceModel.Activation.Iis7Helper.ExtendedProtectionDotlessSpnNotEnabledThrowHelper(System.Object)'.. ---> System.MissingMethodException: Method not found: 'System.String System.ServiceModel.Activation.Iis7Helper.ExtendedProtectionDotlessSpnNotEnabledThrowHelper(System.Object)'.
   at System.ServiceModel.WasHosting.MetabaseSettingsIis7V2.WebConfigurationManagerWrapper.BuildExtendedProtectionPolicy(ExtendedProtectionTokenChecking tokenChecking, ExtendedProtectionFlags flags, List`1 spnList)
   at System.ServiceModel.WasHosting.MetabaseSettingsIis7V2.WebConfigurationManagerWrapper.GetExtendedProtectionPolicy(ConfigurationElement element)
   at System.ServiceModel.WasHosting.MetabaseSettingsIis7V2.ProcessWindowsAuthentication(String siteName, String virtualPath, HostedServiceTransportSettings& transportSettings)
   at System.ServiceModel.WasHosting.MetabaseSettingsIis7V2.CreateTransportSettings(String relativeVirtualPath)
   at System.ServiceModel.Activation.MetabaseSettingsIis.GetTransportSettings(String virtualPath)
   at System.ServiceModel.Activation.MetabaseSettingsIis.GetAuthenticationSchemes(String virtualPath)
   at System.ServiceModel.Channels.HttpChannelListener.ApplyHostedContext(VirtualPathExtension virtualPathExtension, Boolean isMetadataListener)
   at System.ServiceModel.Channels.HttpsChannelListener.ApplyHostedContext(VirtualPathExtension virtualPathExtension, Boolean isMetadataListener)
   at System.ServiceModel.Channels.HttpsTransportBindingElement.BuildChannelListener[TChannel](BindingContext context)
   at System.ServiceModel.Channels.BindingContext.BuildInnerChannelListener[TChannel]()
   at Microsoft.Exchange.Services.Wcf.MessageEncoderWithXmlDeclarationBindingElement.BuildChannelListener[TChannel](BindingContext context)
   at System.ServiceModel.Channels.BindingContext.BuildInnerChannelListener[TChannel]()
   at System.ServiceModel.Channels.Binding.BuildChannelListener[TChannel](Uri listenUriBaseAddress, String listenUriRelativeAddress, ListenUriMode listenUriMode, BindingParameterCollection parameters)
   at System.ServiceModel.Description.DispatcherBuilder.MaybeCreateListener(Boolean actuallyCreate, Type[] supportedChannels, Binding binding, BindingParameterCollection parameters, Uri listenUriBaseAddress, String listenUriRelativeAddress, ListenUriMode listenUriMode, ServiceThrottle throttle, IChannelListener& result, Boolean supportContextSession)
   at System.ServiceModel.Description.DispatcherBuilder.BuildChannelListener(StuffPerListenUriInfo stuff, ServiceHostBase serviceHost, Uri listenUri, ListenUriMode listenUriMode, Boolean supportContextSession, IChannelListener& result)
   at System.ServiceModel.Description.DispatcherBuilder.InitializeServiceHost(ServiceDescription description, ServiceHostBase serviceHost)
   at System.ServiceModel.ServiceHostBase.InitializeRuntime()
   at System.ServiceModel.ServiceHostBase.OnOpen(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   at System.ServiceModel.ServiceHostingEnvironment.HostingManager.ActivateService(String normalizedVirtualPath)
   at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath)
   --- End of inner exception stack trace ---
   at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath)
   at System.ServiceModel.ServiceHostingEnvironment.EnsureServiceAvailableFast(String relativeVirtualPath)
 Process Name: w3wp
 Process ID: 5864
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reindeerautoAuthor Commented:
I had some updates that ran automatically after midnight, I have taken a snapshot of my server and uninstalling the updates to see if this corrects the issue.
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reindeerautoAuthor Commented:
No one gave me the advide to uninstall the updates.
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IMD_IS_AdminsCommented:
We had the same issue, removing the KB2756920 & Reboot fixed it.
http://support.microsoft.com/kb/2756920

More details on how to correct the issue under : http://support.microsoft.com/kb/2801728
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