title: How to get IIS 8.5 to send detailed error messages?
body: <p>We are trying to run a classic .asp application on Windows 2012 IIS 8.5. ASP scripts work in general but when there is an error (e.g. include missing or syntax) then we simply see:</p>
  
  <pre><code>An error occurred on the server when processing the URL. Please contact the system administrator. 
  If you are the system administrator please click here to find out more about this error.
  </code></pre>
  
  <p>This although we have enabled detailed error messages on the site and regardless of whether we run the application remotely or via localhost.</p>
  
  <p>We want to know which script and line of code is causing the problem.</p>
  
  <p>We've also tried routing 500 errors to an error handling .asp page which can provide error details to no avail.</p>
  
  <p>PS: There also seems to be no "ASP" feature so no way to enable debugging or the like.</p>