Unable to watch Uverse in Chrome - DirecTV

I am getting error 3.8 and cannot watch any video in Uverse in Chrome (which I need to do to cast). Installed Silverlight and Java, cleared cache, shut off firewall. Using Windows 10. My account is fine, because I can watch without a problem on iPad and phone. This is frustrating enough I am about ready to switch to Xfinity, just so I can access online.

This question, "Unable to watch Uverse in Chrome," is about DirecTV channels, programming, equipment, and sports.