Title: [GUIDE] How to Fix "steamapi64.dll Missing" Error in Black Ops 3 (Verified & Safe)

Step 3: Run as Administrator

1. Uninstall Black Ops 3 from Steam.
2. Delete any remaining game files (usually located in C:\Program Files (x86)\Steam\steamapps\common\Call of Duty Black Ops III).
3. Reinstall Black Ops 3 from Steam.

1. Open Steam and go to Settings > In-game.
2. Check if there are any updates available.
3. If an update is available, click on Update Steam.