So I believe the update that aired on the 29th jan 2019 makes your halo wars 2 file currupt. The update couldn’t fully download because of it. Even tried deleting the game to redownload but second attempt installation still stops as it’s a currupt file. Anyone else had this problem?
Here is my experience with this problem, hope it helps.
The topic title is: “installation stopped - 2019/01/29 update xbox one.”
link: https://www.halowaypoint.com/en-us/forums/f0258e8001734968984e8b56990f8daf/topics/installation-stopped---2019-01-29-update-xbox-one/622ba1f7-9ee9-4f0c-af96-350cceafc4f8/posts?page=1&lc=1033
EDIT: You can also read the topic “[343 RESPONSE] HALO WARS 2 INSTALLATION STOPPED” which is right here (forums > support > halo wars 2) Just sit down and relax before you start. Good luck.