The "Failed to allocate from state pool" error in Call of Duty: Black Ops II

If lowering textures does not work, try the following:

at a resolution lower than your monitor's native setting until you pass the crash point. Verify Integrity of Game Files

: Modern versions of Windows (10/11) handle memory differently than Windows 7, leading to allocation conflicts.

The error is a notorious issue in Call of Duty: Black Ops 2 that typically occurs during map loads in Zombies mode or multiplayer. It is almost exclusively caused by a memory allocation failure where the game attempts to load assets into a memory block that has been restricted by the Windows operating system.