Visual Studio 2013 C# Web Project builds but IDE reports The type or namespace name xxx could not be found error

Question

When opening an MVC4 C# web project in Visual Studio 2013, the IDE reports the error \"The type or namespace name \'_\' could not be found (are you missing a using

Answer 1

I have just had this problem and none of the solutions here helped. I fixed mine by doing a repair of Visual Studio (An option when you select to uninstall the program). Hope this helps someone