Razor intellisense not working in VS 2015

Question

When I load up my VS2013 projects in 2015, all my razor views are filled with red squiggly underlines.

@model, @Scripts @url, @Html.Partial, lambda expressions

Answer 1

I had same issue and none of these answers worked. What I finally saw was, my Views web.config file was referencing MVC 4, and my main web.config was referencing MVC 5. So I could compile fine but intellisense wasn't working. MVC 4 isn't supported in VS2015. Why my web.config files were different I don't know. When I updated MVC in VS2012 months ago it must not have updated that config file.