Xfinity Stream fails in web Browers

From one laptop on my network only, I am unable to use Xfinity Stream. After logging in , I can go to the guide, but the channels don't load. It works from every other machine on my network. I removed/re-installed all of my browsers and it still fails with this message:

"Attempting to Resume...

We've run into a problem while streaming Program Name. Please wait while we try again.

(TVAPP-00281)"

Incognito/Private mode tried

Xfinity equipment restarted

Chrome, Firefox, Edge browsers all re-installed, with no luck

Cookies/cache cleared on all browsers