The most reliable solution is the community-made "T6Fix." This patch specifically addresses memory allocation bugs on modern systems.

Download the from the official Microsoft website.

Run the installer to ensure all legacy .dll files are present. Restart your PC after installation. Virtual Memory (Page File) Check

By applying the T6Fix and disabling Shader Warming, 95% of players can resolve the "Failed to allocate from state pool" error. These steps ensure the engine respects the memory limits of its 2012 design.

The game engine often crashes when it tries to pre-allocate more memory than its 32-bit architecture can handle. Right-click in your Steam Library. Select Properties > General .

Search for "T6Fix Black Ops 2" on GitHub or reputable modding forums. Download the t6fix.dll or the designated executable.

Place the file in your game’s root directory (where t6mp.exe or t6sp.exe is located).