I have to download it again too. Can't update the launcher, error to update launcher they said ( again ) now I use Tweaker but it seem I have to download it from this shitty store anyway.
Converse with fellow players
But Halo too is microsoft bind and still on steam. But ok I understand thank for enlighten me at the subject I was wondering and cannot find answer on net. Hope they will fix it, im tire to xfer the game from my other hardisk every day. ( It uninstall even during im playing lol )