title: .NET Core Web Api: call localhost returns 404
body: <p>I've a <strong>.NET Core Web Api</strong> and when I start the project with IIS Express I get a 404, 
  when I use Postman and call a web Api-localhost (without route) I get a 500.
  But in my case I get a 404, with or without route.
  At the launch.settings I got:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>  "iisSettings": {
      "windowsAuthentication": false,
      "anonymousAuthentication": true,
      "iisExpress": {
        "applicationUrl": "http://localhost:63793",
        "sslPort": 0
      }</code></pre>
  </div>
  </div>
  </p>
  
  <p><strong>Why I get a 404 when I call "<a href="http://localhost:63793" rel="nofollow noreferrer">http://localhost:63793</a>"?</strong></p>