title: No input file specified PHP error under IIS
body: <p>I'm running a site under IIS with PHP running in CGI mode. PHP was installed to a pre-existing site so a handler was setup for <code>.html</code> files to be parsed by PHP as well as <code>.php</code> files.</p>
  
  <p>When a non-existent page with a <code>.php</code> extension is requested, a 404 is thrown and user is redirected to the custom 404 page, however when a non-existent page with a <code>.html</code> extension is requested the "No input file specified." error is shown.</p>
  
  <p>I've searched this error and found potential solutions for similar issues but nothing that solves this particular boggle. Any ideas or pokes in the right direction would be much appreciated!</p>