How To Fix Steamapi64rdll Missing Error In Black Ops 3 Verified Updated Jun 2026

Add the Black Ops 3 installation folder to your Exclusions list in antivirus settings so it isn't deleted again. Step 2: Verify Game Files (Official Version)

Below are the verified, step-by-step methods to resolve this issue and get your game running again. Method 1: Restore the File from Antivirus Quarantine

Antivirus programs frequently flag cracked or even modified Steam DLL files as false positives. If your security software recently ran a scan, it likely quarantined the file. Open (Press Win + I ). Navigate to Privacy & Security > Windows Security . Click on Virus & threat protection . Select Protection history . Add the Black Ops 3 installation folder to

: This is the most reliable way to redownload the missing file through Steam. Steam Library Right-click Call of Duty: Black Ops III and select Properties Installed Files tab and click

Your antivirus has likely isolated the file. Restoring it and setting an exclusion will fix the issue permanently. If your security software recently ran a scan,

If the file was permanently deleted or corrupted, Steam can automatically scan your directory and re-download the missing steamapi64.dll file. Launch the client and go to your Library .

Right-click on and select Properties .

: Your security software mistakenly flags and quarantines the DLL file.

If you own the game on Steam, use the built-in repair tool to automatically download the missing file. ThinkMobiles Open your Steam Right-click on Call of Duty: Black Ops III and select Properties Installed Files tab and click Verify integrity of game files Steam will scan for missing components and re-download steam_api64.dll ThinkMobiles Method 2: Check Antivirus Quarantine Click on Virus & threat protection