Antivirus programs often move this file to a quarantine folder because it behaves similarly to protected system files. Open (or your third-party antivirus). Go to Virus & threat protection > Protection history . Look for recent entries involving "steam_api64.dll". Select the file and choose Restore .
If you own the game on Steam, you can automatically replace the missing file. Open your .
To prevent it from being deleted again, go to in your antivirus settings and add the Black Ops 3 installation folder. 2. Verify Game File Integrity (Steam Users) --- How To Fix Steam-api64r.dll Missing Error In Black Ops 3
After this process, verify your Black Ops 3 files again (Method 1).
Locate the (specifically the 2012 or later x64 versions). Right-click it, select Change , and then click Repair . Restart your PC once the repair is finished. 4. Run System File Checker (SFC) Antivirus programs often move this file to a
There are few things more frustrating in PC gaming than clicking "Play" on a game you’ve been waiting to jump into, only to be met with a cryptic error message. For fans of Call of Duty: Black Ops 3 , one of the most infamous pop-ups is the or “steam-api64r.dll not found” error.
This is the "Gold Standard" fix for Steam users. If the steam-api64r.dll file is corrupted, incomplete, or missing, Steam will detect this and download a fresh, clean copy. Look for recent entries involving "steam_api64
If verifying files fails, the Steam download server might be caching a bad version. Forcing a fresh download via SteamCMD (Steam Console Client) is a more technical but effective workaround.
Overlays from Discord, NVIDIA GeForce Experience, or other software can hook into the Steam API and cause conflicts. The steam-api64r.dll might fail to load because another program is trying to use the same memory space.