Download Tubecast VR on the Windows Store :

Features :

Tubecast VR is the first mediaplayer on the “Windows Store” for watching 360° YouTube videos within your immersive headset.
It also reads local and external photos and videos.
Explore the 360° videos by moving your head, and browse the interface with the motion controllers.

Try this amazing experience and enjoy the 360° videos easily with Tubecast VR.

Trial version
You can watch 20 videos without restrictions, after that you could only see the 30 first seconds of each video.
Buy the app to watch videos without restrictions and enjoy the download feature.

Features
Watch 360° videos from YouTube in any format (up to 8K)
Watch 360° videos and photos from local and external storages.
Multi 360° formats supported : Spherical, Side By Side
Search YouTube videos with the internationalized embedded keyboard or with speech
Download videos up to 8K
“History” playlist
“Favorites” playlist
“Downloads” playlist
Handy navigation like in a web browser
Support restricted videos (you have to login to prove your age)
5 languages : English, Spanish, French, German, Italian.