title: Prevent users from opening PDFs in Reader
body: <p>We use a LiveCycle form, but don't utilize Reader Extensions as all of our internal users should have Adobe Pro installed. However, there are a handful (often new employees or people working from new systems), that either don't have Pro installed yet or have Adobe Reader opening PDFs by default.</p>
  
  <p>Is there any way to either prevent a form from opening in Reader, or determine when a PDF is opened with Reader and display a message? The latter is ideal, as we could direct our users to see IT staff to install Pro.</p>