Have you started working on a .NET 4.0 project and received the following error?
Could not load type ‘System.ServiceModel.Activation.HttpModule’ from assembly ‘System.ServiceModel, Version=3.0.0.0, 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=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
If you have, you probably have installed .Net framework 4.0 on IIS and then enable either a .Net 3.0 or 3.5 WCF feature. To fix you need to reconfigure ASP.NET by using the following command depending on the version of ASP.NET you have installed.
- IIS 32 bit
%SYSTEMROOT%\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis /iru- IIS 64 bit
%SYSTEMROOT%\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis /iru