I get this message failedto find service connection url

Same problem here but only on my Mac Pro and Apple TV, my iMac and Mac Mini work fine.

Got same issue on my windows desktop. Uninstalled, restarted, cleared cache tried toggeling Genius on and off. No dice.

Both my devices are now working, I shut both down and unpluged waited an hour or more started Apple TV up first and I was able to log on iTunes, Mac Pro also worked after the shut down.