'ExtendedProtection' error upon processing

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

1. Open IIS (Internet Information Services) and In the "connections" file tree on the left, click the disclosure triangle next to the "sites" folder.
2. Then, open "default website" and select the "authentication" icon in the default website home.
3. Next, select "Windows Authentication" from the list and select "Advanced Settings" within the actions menu on the right of the screen.
4. 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