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

Filed in .Net | ASP.Net Configuration Leave a comment

We have a dotnet web site which is built on framework 4.0 and is running over windows 2008 R2 server.

Today we added an application role to the server and defined framework 3.5 to be installed alongwith that. After doing this we suddenly started receiving the below error:

Could not load type ‘System.ServiceModel.Activation.HttpModule’ from assembly ‘System.ServiceMode…..

After doing some googling I found the solution which suggests that register the again with the appropriate version so I registered the (using aspnet_regiis -i command in the v4.0 folder of the dotnet framework) and that resolved my problem.

Found the solution at :