There is currently an HBO Freeview, but it is limited to OnDemand or streaming individual shows/movies only. The linear channels are not included. Also, the freeview ends December 2.
If you have a non-X1 (iGuide) box, there is a link on the main OnDemand screen, but if you have HD, I would go to Premium Channels, then HBO OnDemand, then HBO OnDemand HD. The main OnDemand screen link doesn't always list HD versions of the shows.
@RERE2 wrote: I received an email stating I had HBO free until 22 Dec why can I not view it