title: The system cannot execute the specified program in visual studio
body: <p>I have windows 10, and visual studio 2017, target framework is 4.5.1. </p>
  
  <p>I wrote a simple console app, that only prints "Hello world", but when I run the output says:</p>
  
  <p><code>The system cannot execute the specified program</code></p>
  
  <p>Please give some advises.</p>