The most reliable fix for the permissions conflict is moving the game library out of the protected Program Files directory. By moving the Steam Library to a custom folder (e.g., D:\Games ), the user removes the Windows UAC (User Account Control) bottleneck. Steam then has free rein to create and modify files without requesting elevation.
If you see steam_api.dll , select and add the Black Ops II installation folder to your Exclusions list. 3. Run Steam as Administrator 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. The most reliable fix for the permissions conflict
