Ensure your antivirus hasn't deleted the plutonium.exe or the associated DLLs.
This article will explain this error happens, offer step-by-step solutions for every possible cause, and provide preventative measures to ensure it never returns. black ops 2 cannot create steam-api.dll
Your antivirus ate the file. Restore it from Windows Security's "Protection history" and exclude your Steam folder. Ensure your antivirus hasn't deleted the plutonium
: This is the most reliable official fix to replace missing or corrupted files. Open your Steam Library . Right-click Call of Duty: Black Ops II . Select Properties > Installed Files . Restore it from Windows Security's "Protection history" and
Unlike a "missing DLL" error, the phrase "Cannot create" is very specific. It means your computer knows the file needs to be there, but Windows is blocking the game (or Steam) from writing that file to your hard drive.