Failed to deploy the WCF server from the assembly "System.ServiceModel, Version=3.0.0.0 problem

  

When deploying the WCF server in the IIS server in Windows Server 2008, the following error is reported through the browser access:

Failed to load type "System.ServiceModel.Activation.HttpModule" from the assembly "System.ServiceModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089".

Reason:

This is because the .NET Framework 4 was installed first, and then the .NET Framework 3.5 WCF HTTP activation is enabled. This error occurs.

Solution:

Microsoft officially The question is also answered: http://msdn.microsoft.com/en-us/library/aa751852.aspx

Only the admin user must run aspnet_regiis.exe in cmd -i -enable can.


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