Unable to start debugging. The startup project could not be launched. VS2015

Question

I have started a new console project in VS2015. I only have this code :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text         


        

Answer 1

For me solution was to run testapp.csproj instead of testapp.sln. This can be selected from drop down next to green play button.