Resident Evil 6 officially supports online and split-screen co-op, it lacks a native LAN (Local Area Network) mode. To play with friends on a local network without an active internet connection, you generally need to use third-party "fixes" or emulators that trick the game into seeing local computers as part of a Steam network. Steam Community
's netcode can be finicky. To prevent desyncing or crashes during your session: Resident Evil 6 - LAN nosteam Tutorial resident evil 6 lan fix
: Ensure both players have disabled or added an exception for ResidentEvil6.exe Windows Defender Firewall 2. Offline LAN Fix (SmartSteamEmu) Resident Evil 6 officially supports online and split-screen
