I was able to play and enjoy Halo Master Chief Collection but maybe after some game update, it fails to launch in both Crossover 24 and 25 (I was hoping for a fix with the new version).
It says that it fails to load the anti-cheat module.
I ran into this, too, after Steam updated the anti-cheat module. On Meredith's advice, I poked around in the "Properties" UI, where there's a "Launch Options" dropdown and an option to disable the thing.
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