How do I open a csproj with ProjectTypeGuids 349c5851-65df-11da-9384-00065b846f21?

Question

I have Visual Studio 2012 Professional. When I try to open a particular csproj I get an error message

The project type is not supported by this instal

Answer 1

There is a really easy way to solve this.

Probably some of the dependencies are missing, and it is really hard to find out which one.

Go to

http://www.asp.net/downloads

Download ASP.NET and WebTools for your version of Visual Studio

A web platform installer will come up, which will install all the required tools

This solved my problem

There is no need to go through the ProjectTypeGuids

Answer 2

Found Visual Studio 2012 in the old 'add remove programs', then pressed 'change'. Fixed by installing 'Microsoft Web Developer Tools'