So I installed the Halo Wars definitive edition without any issues(9.46 GB), but there is another file in my queue that is stuck at 98% , it only 480.51 KB and the thumbnail is black. Anyways the game seems to be working, but just wanted to point this out thanks!
Same issue here, it looks like the Halo app on W10. Mine goes to 98, resets, and tries again with no success. Glad to see it doesnt effect the game!
I also had another issue using my code, it kept giving me an error but my installation started on the game. I think that was my fault though, I installed Halo Wars like it was DLC to Halo Wars 2 and so I think that messed everything up.