The type 'System.Object' is defined in an assembly that is not referenced

Question

I installed a Microsoft ASP.NET Web API Compression nuget package to my project and added a line to WebApiconfig inside Register method as shown in this link https://www.nug

Answer 1

This was a bit tricky because I also tried add the assembly reference to the project’s root Web.config file first, which didn’t help in my case. After that I did the same thing for the Web.config file that is located in the Views folder for my ASP.NET MVC project: Views\Web.config

The above worked.

Actually I already had one assembly reference System.Web.Mvc there before, so here’s the complete list for my ASP.NET MVC project.