Hi Been loving my note 10.1 since December last year but in the last week I can't watch any YouTube videos. I get the same error when trying to watch via my home Wifi. At first it won't play videos with adverts before they start. Then it was all videos. I thought it was my wifi so swapped my router but this hasn't helped. I tried using my phones 3g network and videos play fine.
Google has made a change to their YouTube platform so that users can now cast live videos to their Chromecast devices. This new feature only works when users are accessing YouTube using their desktop web browser where they will find the cast button now available on live streams.