title: IISExpress does not start from Visual Studio 2015
body: <p>There are several questions here why <strong>IISExpress</strong> does not launch. The answers I found did not help. But I found the answer myself. This post may help others resolve the issue.</p>
  
  <p><strong>Behavior</strong>: You open a web project you copied from somebody else in Visual Studio 2015. You cannot select Browsers and when you start using F5 you get a message that says </p>
  
  <blockquote>
    <p>Unable to launch the IIS Express Web server.</p>
  </blockquote>
  
  <p>There is no indication why. Deleting <em>applicationHost.config</em> does not help, restarting / reinstalling etc. does not help either. Admin mode doesn't matter and a new project an the target machine works as expected. </p>