title: Sudden Bad Request - Invalid Verb on during debugging Visual Studio
body: <p>During development I suddenly started to receive following error message</p>
  
  <pre><code>Bad Request - Invalid Verb
  
  HTTP Error 400. The request verb is invalid.
  </code></pre>
  
  <p>The website under development was run on ISSExpress via Visual Studio. It stopped working out of the blue, without any changes in the configuration.</p>
  
  <p>I'm using: ASP MVC, C#</p>
  
  <p>What can be the cause?</p>