title: Web development with IIS security
body: <p>I've been working on an old secure website on my local machine's IIS on occasion.  It's probably been a couple weeks since the last time.  However, now all of a sudden IIS seems to have a problem with it.  I can't even get to the root page.  Chrome reports a general failure.  Edge is more informative with:</p>
  
  <blockquote>
    <p>This might be because the site uses outdated or unsafe TLS security settings. If this keeps happening, try contacting the website’s owner.</p>
  </blockquote>
  
  <p>Well, I'm the website owner and I have no clue what might have happened.  It works fine in production, but the local development version suddenly just doesn't work.  So far I haven't found anything useful on Google.  Is there a common checklist for troubleshooting these issues?</p>