Ensure the OpenNet.dll file hasn't been quarantined by Windows Defender .
The error message is a specific technical alert most commonly encountered by gamers using Nucleus Co-op , a community-driven tool for local split-screen play. This error typically occurs when the "OpenNet" component—a custom networking layer—is injected into a game instance (like Call of Duty: Black Ops II ) that the software fails to correctly identify or hook into. Understanding the "Opennet Plugin" Opennet Plugin Loaded Into An Unknown Process
Ensure the in-game resolution matches your monitor's native resolution before attempting to run it in split-screen. Run as Administrator Ensure the OpenNet
