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Asked: 2026-05-15T06:45:29+00:00

Greetings, today before I start working on my application I updated my WinXP. After

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Greetings,

today before I start working on my application I updated my WinXP. After all updates have been installed my WCF service stop working. There is a following error when I try to open service.svc file in the browser:

Configuration Error

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. 

Parser Error Message: An error occurred creating the configuration section handler for system.serviceModel/bindings: Could not load type 'System.Security.Authentication.ExtendedProtection.Configuration.ExtendedProtectionPolicyElement' from assembly 'System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.

Source Error: 


Line 131:       </behaviors>
Line 132:
Line 133:       <bindings>
Line 134:           <wsHttpBinding>
Line 135:               <binding name="MyWSHttpBinding" maxReceivedMessageSize="2147483647">

The colleague of mine tried to run the same service before update and it works fine. He has the same problem after installing updates. Can someone please help me?

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1 Answer

  1. Editorial Team

    So far, the problem indeed seems to come from the update KB982168 and only on 2003 servers. Microsoft support suspects a bug in the HttpTransportSecurity constructor that tries to instantiate a ExtendedProtectionPolicy object, but this class does not exist in system.dll on a 2003 server (or XP machines) (you can check with reflector). And it is indeed present on the DLL on a 2008 or Vista and above. If the problem is confirmed, I think there will be a hot fix released very soon. Meanwhile it is recommended to not install the update. I’ll keep you informed.

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