Call Of Duty Infinite Warfare Steamapi64rdll Missing Work May 2026

The "steam_api64.dll missing" error in Call of Duty: Infinite Warfare typically happens when your antivirus software incorrectly flags the file as a threat and quarantines it, or if the file was corrupted during installation.

Follow these steps to restore the file and get the game running again: 1. Verify Integrity of Game Files

This is the most effective fix as it forces Steam to scan your folders and redownload any missing or corrupted files. Open your Steam Library. Right-click on Call of Duty: Infinite Warfare. Select Properties > Installed Files. Click Verify integrity of game files.

Wait for the process to finish; Steam will automatically replace the missing steam_api64.dll. 2. Check Antivirus Quarantine

If the file disappears again after verifying, your antivirus is likely deleting it. Open your Antivirus or Windows Security settings. Go to Protection History or Quarantine. Look for steam_api64.dll. call of duty infinite warfare steamapi64rdll missing work

Select Restore and then Allow or Exempt the file so it isn't flagged again. 3. Add a Folder Exclusion

To prevent future crashes or missing file errors, tell your security software to ignore the game folder. Go to Windows Security > Virus & threat protection.

Under "Virus & threat protection settings," select Manage settings. Scroll to Exclusions and click Add or remove exclusions.

Click Add an exclusion and select the Folder where Infinite Warfare is installed (usually C:\Program Files (x86)\Steam\steamapps\common\Call of Duty Infinite Warfare). 4. Update DirectX and Visual C++ Redistributables The "steam_api64

Sometimes the DLL error is a symptom of outdated system libraries.

Download and install the latest DirectX End-User Runtime from the official Microsoft website.

Ensure you have the latest Visual C++ Redistributable Packages (both x86 and x64 versions).

Pro-Tip: Avoid downloading standalone .dll files from "DLL fixer" websites. These are often outdated or bundled with malware. Always use Steam's built-in verification tool to get the official file. Open Steam and go to your Library

2. Verify Integrity of Game Files (The Most Reliable Fix)

Steam can automatically detect and replace missing or corrupted DLL files.

  1. Open Steam and go to your Library.
  2. Right-click on Call of Duty: Infinite Warfare.
  3. Select Properties > Installed Files.
  4. Click Verify integrity of game files...
  5. Wait for the process to complete. Steam will re-download only the missing steam_api64.dll (approx. 3-5 MB).
  6. Launch the game.

1. Restart Your PC & Steam

Before editing files, restart your computer. This releases any file locks and clears temporary glitches. Then, fully exit Steam (right-click the system tray icon > Exit) and relaunch it.

The "Mismatched Architecture" Trap

Are you trying to play Infinite Warfare on a 32-bit version of Windows? You cannot. The "64" in steamapi64r.dll means it requires a 64-bit OS.