https://bugs.winehq.org/show_bug.cgi?id=52377
--- Comment #2 from nekoNexus@protonmail.ch --- Getting it from Archive.org is the only way to get it "for free," so to speak; Halo Online is kind of proprietary abandonware
That said, the reason why i didn't provide a link is because directly linking it myself is against Microsoft's ToS and I don't want to breach that ;)