title: Chromecast debugging via port 9222 stopped working
body: <p>I've been using port 9222 to debug Chromecast receiver code for over a year. It stopped working today. I get</p>
  
  <p>"You may have to select the shield icon in the address bar to establish a connection"</p>
  
  <p>instead of the the debugging URL. There is no shield icon. This problem seems to be spreading slowly at our site. Everything is enabled for the Chrome browser.</p>
  
  <p>I tried rebooting chromecast, rebooting PC, update Chrome, the Canary beta version, etc. No joy.</p>
  
  <p>Any help is greatly appreciated.</p>