[A]System.Web.WebPages.Razor.Configuration.HostSection cannot be cast to… web.config issue

Question

I am getting the following error:

[A]System.Web.WebPages.Razor.Configuration.HostSection cannot be cast to [B]System.Web.WebPages.Razor.Configuratio

Answer 1

Tried all the methods above, and the issue was still not solved until I inserted the following lines in web.config directly under project folder.