MS CRM Webservice does not work

Nach der installation und dem Import einer 4.0er Orga kommt es bei der Configuration des Outlook Clients zu dem Fehler
There is a problem communication with the MS CRM Server....
Port ist 80... kann es etwas damit zu tun haben?
Aufruf der WSDL funktioniert nicht. Fehler siehe unten.

Danke!

WSDL Fehler
Fehler:

Wiederholen Sie diese Aktion. Falls das Problem weiterhin besteht, suchen Sie in der Microsoft Dynamics CRM Community nach einer Lösung, oder wenden Sie sich an den Microsoft Dynamics CRM-Administrator Ihrer Organisation. Schlussendlich können Sie sich an den Microsoft Support wenden.



Ereignisanzeige Windows server 2008 Enterprise R2 von System Service Model 4.0.0.0


WebHost failed to process a request.
Sender Information: System.ServiceModel.Activation.HostedHttpRequestAsyncResult/11679222
Exception: System.ServiceModel.ServiceActivationException: The service '/XRMServices/2011/Discovery.svc' cannot be activated due to an exception during compilation. The exception message is: The extended protection settings configured on IIS do not match the settings configured on the transport. The ExtendedProtectionPolicy.PolicyEnforcement values do not match. IIS has a value of WhenSupported while the WCF Transport has a value of Never.. ---> System.NotSupportedException: The extended protection settings configured on IIS do not match the settings configured on the transport. The ExtendedProtectionPolicy.PolicyEnforcement values do not match. IIS has a value of WhenSupported while the WCF Transport has a value of Never.
at System.ServiceModel.Activation.HostedAspNetEnvironment.ValidateHttpSettings(String virtualPath, Boolean isMetadataListener, Boolean usingDefaultSpnList, AuthenticationSchemes& supportedSchemes, ExtendedProtectionPolicy& extendedProtectionPolicy, String& realm)
at System.ServiceModel.Channels.HttpChannelListener.ApplyHostedContext(String virtualPath, Boolean isMetadataListener)
at System.ServiceModel.Channels.HttpTransportBindingElement.BuildChannelListener[TChannel](BindingContext context)
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.Runtime.AsyncResult.End[TAsyncResult](IAsyncResult result)
at System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result)
Process Name: w3wp
Process ID: 15104