Web Api Core hangs when start it on IIS Express in Visual Studio 2017?

Question

I just updated Visual Studio to final version of 2017.
I'm working on a WebApi core project.

Whenever I start it with IIS Express, Google Chrome comes up and stay on loading in the following page without any responses

What's wrong with it?
The problem on github

Answer 1

Enabling IISExpress on WebApi Core:

1. Enabling the IISIntegration components:
Install Microsoft.AspNetCore.Server.IISIntegration package.

2. Edit Program.cs in root of project:

 var host = new WebHostBuilder()
    .UseKestrel()
    .UseContentRoot(Directory.GetCurrentDirectory())
    .UseIISIntegration() // Add this line
    .UseStartup<Startup>()
    .Build();