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

by Technical Evangelist on ‎06-09-2016 10:43 AM - edited on ‎04-13-2017 05:25 AM by Technical Evangelist (601 Views)

Symptoms

Getting the following error while launching the AdminConsole:

Could not load type 'System.ServiceModel.Activation.HttpModule' from assembly 'System.ServiceModel, ......

Diagnosis

If IIS is enabled after .NET 4 installation then ASP.NET is not registered with IIS. Users will encounter the following error when the site being targeted is ASP.NET 4:

 

Could not load type 'System.ServiceModel.Activation.HttpModule' from assembly 'System.ServiceModel, Version=3.0.0.0,

 

Solution

To resolve this issue, run the following from elevated command from a command prompt line to register ASP.NET 4:

 

aspnet_regiis.exe /iru

 

The aspnet_regiis.exe file can be found in either:

 

  • %windir%\Microsoft.NET\Framework\v4.0.30319
  • %windir%\Microsoft.NET\Framework64\v4.0.30319 (on a 64-bit machine)

 

Restart IIS using the command c:\iisreset /restart

 

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