https://www.techdirt.com/articles/20211109/09064247908/denuvo-games-once-again-broken-paying-customers-thanks-to-drm-mishap.shtml

It's been a while since we've mentioned Denuvo, the once-vaunted anti-piracy video game DRM that subsequently became an industry punchline. Once touted as "uncrackable", Denuvo went from there to becoming indeed crackable, then crackable shortly after release of games, to then being crackable the same day, to then being cracked in some cases hours after a game's release. As a result, plenty of publishers have taken to patching Denuvo out of their games, while Denuvo did a mini-pivot to create anti-cheat software for online games. While all that was going on, plenty of paying customers of games protected by Denuvo complained about various issues: authentication issues intermittently preventing the customer from playing the game they bought, performance issues that are linked back to how Denuvo runs and behaves, or Denuvo simply breaking games.

In other words, Denuvo is a case study in real world DRM: no real protection from piracy, but plenty of headaches for paying customers. If that sounds like a recipe for disaster, well, yeah. But, it's an ongoing disaster, it appears. A whole bunch of PC video games suddenly became unplayable this past week, such as Marvel's Guardians of the Galaxy.