SYMPTOMS
WebHost failed to process a request. Within Windows error log, a "SystemServiceModel 4.0.0.0" error is displayed.
CAUSE
Windows error log message:
Sender Information: System.ServiceModel.Activation.HostedHttpRequestAsyncResult/24882438 Exception: System.ServiceModel.ServiceActivationException: The service '/EDiscoveryService/dataservice.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.
RESOLUTION
- Open IIS (Internet Information Services) and In the "connections" file tree on the left, click the disclosure triangle next to the "sites" folder.
- Then, open "default website" and select the "authentication" icon in the default website home.
- Next, select "Windows Authentication" from the list and select "Advanced Settings" within the actions menu on the right of the screen.
- Then, in the "Extended Protection" drop down menu, select OFF. Also be sure to check the " Enable Kernal Mode Authentication" box.
APPLIES TO
2.1; 2.1 Service Pack 1
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