I've been using the Xfinity stream app on my newer Ultra with no problems since I got it. All of a sudden it's not working today. I'm getting error TVAPP-00101, saying "this device Dan only access Xfinity Stream on your in-home network."
I'm connected via wired but have tried it on WiFi as well. I've reinstalled the app, restarted my Roku, restarted my router and modem, and tried pretty much every I can think of. Comcast customer support has been useless. I welcome any advice.