System.web.mvc missing

Question

We have an old ASP.NET MVC 3 Web Application, building in VS2010, that fails to compile, since last week\'s security update.

The problem is that the reference to Sys

Answer 1

Easiest way to solve this problem is install ASP.NET MVC 3 from Web Platforms installer.

http://www.microsoft.com/web/downloads/

Or by using Nuget command

Install-Package Microsoft.AspNet.Mvc -Version 3.0.50813.1