It was just this week that YouTube finally returned to Windows Phone, and Google has already blocked the new app



From Techradar:

Citing that YouTube (a Google property) had worked with Microsoft to create a new app, but one based on HTML5 a YouTube spokesperson sent us this statement:

"Unfortunately, Microsoft has not made the browser upgrades necessary to enable a fully-featured YouTube experience, and has instead re-released a YouTube app that violates our Terms of Service," the spokesperson said.

"It has been disabled. We value our broad developer community and therefore ask everyone to adhere to the same guidelines."

  Well that was fast: Google blocking Microsoft's re-released YouTube app