is a legacy memory allocation bug typically triggered by high-intensity mission scripts or conflicts with modern software overlays. While there is no official patch, several community-verified workarounds can bypass the crash, especially during the problematic "Los Angeles" (Cordis Die) mission. Steam Community Immediate Workarounds Lower Graphics & Windowed Mode
BO2 Error: Failed to allocate from state pool :: Call of Duty is a legacy memory allocation bug typically triggered
Turn every graphical option to its lowest possible setting or "Off". Windowed Mode: Switch from Fullscreen to Windowed mode. Windowed Mode: Switch from Fullscreen to Windowed mode
If you use the launcher (the most stable way to play BO2 in 2026), you can pass advanced memory arguments. If unresolved, gather system details and crash logs
Follow the prioritized list above: update GPU drivers, verify/repair game files, disable overlays, increase virtual memory, and try running as Administrator; then work through config, GPU, and hardware checks. If unresolved, gather system details and crash logs and request targeted help with that information.