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Could not load type 'System.ServiceModel.Activation.HttpModule'

Posted By:      Posted Date: September 24, 2010    Points: 0   Category :WCF
 

Hello everyone,

I am using VSTS 2010 + C# + .Net 4.0 + IIS 7.5 + Windows 7. When I open an svc file (in IIS manager, right click the svc file and select browse) for a WCF project in IIS, there is an error like this, any ideas what is wrong?

 

Could not load type 'System.ServiceModel.Activation.HttpModule' from assembly 'System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.TypeLoadException: Could not load type 'System.ServiceModel.Activation.HttpModule' from assembly 'System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of


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An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
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