Black Ops 2 Cannot Create Steam-api.dll May 2026

Getting an error that says Call of Duty: Black Ops 2 "cannot create steam-api.dll" usually means antivirus software

1. Navigate to C:\Program Files (x86)\Steam\steamapps\common\Call of Duty Black Ops II.
2. Right-click the Call of Duty Black Ops II folder → Properties → Security tab.
3. Click Advanced → Next to "Owner," click Change → Type Everyone → Click Check Names → OK.
4. Back in Advanced settings, select Add → Select a principal → Type Everyone → OK.
5. Under Basic permissions, check Full control → OK.
6. Also check "Replace all child object permission entries" → Apply → OK.
7. Restart Steam and try launching the game.

Try disabling your "Real-Time Protection" for 10 minutes and then launch the game. If it works, you’ll need to add the Black Ops 2 folder to your antivirus Exclusion List 2. Verify Game Files on Steam black ops 2 cannot create steam-api.dll

Step 2: Taking Ownership (The Nuclear Option for Permissions)

If Admin mode didn't work, Windows doesn't think you own the folder you're trying to write to. This is common if you migrated your Steam library from an old hard drive or installed Windows without wiping the drive. Getting an error that says Call of Duty:

takeown /f "C:\Path\To\BlackOps2" /r /d y
icacls "C:\Path\To\BlackOps2" /grant Administrators:F /t

Run as AdministratorThe "cannot create" error often stems from Windows blocking the game from writing files to its own folder. Navigate to your game installation folder. Try disabling your "Real-Time Protection" for 10 minutes

The "cannot create steam_api.dll" or "steam_api.dll is missing" error in Call of Duty: Black Ops II