MVC Razor view Intellisense broken in VS 2013/2015/2017

Question

I have an existing project written in VS2010 which when loaded in VS2010 works perfectly.

When I load this same project in VS2013 the MVC Razor views contain lots of

Answer 1

I am using visual studio 2012. I tried all of the above but finally the problem is resolved by installing :

ASP.NET and Web Tools 2013.1 : http://blogs.msdn.com/b/webdev/archive/2013/11/18/announcing-release-of-asp-net-and-web-tools-2013-1-for-visual-studio-2012.aspx