neumi5694: @Braunyar
Have you tried to roll back to the version that supports LAN only and then disable auto updates?

Gersen: The latest version support LAN too, it hasn't been removed or anything.

vv221: How is DRM-gating of online multiplayer an "imagined problem"?

vv221: How is DRM-gating of online multiplayer an "imagined problem"?

mqstout: Grim Dawn does not require Galaxy to play SP, including for LAN-based multiplayer. It does accept Galaxy for Internet multiplayer (if you don't want to use a VPN connection or such). Grim Dawn's Internet-based multiplayer always required middleware. Fortunately, the awesome devs at Crate made sure it still had direct connect (LAN). [I was a crowdfunding backer, followed development, played immediately on release, etc.]

Syphon72: Don't accept "most games do" as an excuse. Even if it's true, it should still be disableable and be opt-in. It's been ages since I've re-installed a fresh GD copy (I've been steady with keeping it), so I don't remember if it was opt-in, but it sure is easily toggled. But, as was said, there's a difference between a specific game doing things internally, and external software doing things.

OP, there's a major difference between Steam and Galaxy for multiplayer. There's even arguable reasons that Galaxy-multiplayer is better than "each title does their own Internet multiplayer" (for future deprecation and development of drop-in replacements). Fortunately in Grim Dawn's case -- which I wish were universal -- there's LAN play also included.