title: Why do I get a certificate "error" in Firefox ONLY?
body: <p>I have a small LAN with:</p>
  
  <ol>
  <li>A Synology server where I have installed a Comodo Wildcard
  Certificate for mydomain.com.</li>
  <li>Three wired clients running Windows 8.1 Pro and Windows 10 Pro, and
  one wireless client running Mac OSX.</li>
  <li>This LAN is connected via an IPSEC VPN to another remote LAN with
  more clients.</li>
  </ol>
  
  <p><strong>My issue:</strong></p>
  
  <p>When I try to connect to my Synology box using https:// from a LOCAL client, using Internet Explorer 11 or Google Chrome, everything works fine.  The browsers see that the website has a valid SSL Certificate and I get no errors or warnings of any kind.</p>
  
  <p>However, when I use Firefox, the certificate doesn't work at all, with the following symptoms:</p>
  
  <ol>
  <li><p>For <strong>THREE Wired Clients on LAN using Windows 8.1 Pro/Windows 10 Pro and Firefox:</strong></p>
  
  <p>"The Connection is Untrusted" If I click on the little Globe next to the Address bar it says "The website does not supply identity information.  Your connection to this website is not encrypted."</p></li>
  <li><p>For <strong>Wireless Client on LAN using OSX and Firefox:</strong></p>
  
  <p>EVERYTHING WORKS FINE.  If I click the lock next to the address bar in Firefox it correctly shows that the website is verified by COMODO.</p></li>
  <li><p>For <strong>Wired Client on another LAN running Windows 7 and connecting via VPN and Firefox:</strong></p>
  
  <p>EVERYTHING WORKS FINE.</p></li>
  </ol>
  
  <p>So in summary: I can connect via HTTPS using Internet Explorer or Chrome from ANYWHERE with no problems.  I only have problems with FIREFOX on SPECIFIC MACHINES.  It is like they aren't seeing the certificate AT ALL.  What is something I could look at here?</p>
  
  <p>Note that on the Windows 10 Pro machine, it is a BRAND NEW FRESH install.  There is nothing else on the machine except browsers.  This is a brand new fresh install of the latest Windows with the latest Firefox.</p>