Error: Inheritance security rules violated by type: 'System.Web.WebPages.Razor.WebPageRazorHost'

Question

Out of nowhere my ASP.NET MVC 4 solution gives me this error:

Inheritance security rules violated by type: \'System.Web.WebPages.Razor.WebPageRazorHos

Answer 1

For me commenting of "System.Web.Razor" from web config did not worked.Here are the things i did to resolve this. Search your whole solution for references to MvcWebRazorHostFactory. you will find something like below in config file.

Change Version=4.0.0.0 to Version=5.0.0.0 and it will work.