This usually happens when the game file is missing, corrupted, or deleted by antivirus software during installation.
Note: Placing it in System32 is sometimes suggested but generally less effective than putting it in the game's root directory. Specific "Alien vs Predator 3" Issues steam_api.dll Error Windows 11 | 2 Ways To FIX | 2021 alien vs predator 3 steam apidll work
: Security software often flags steam_api.dll as a "false positive" and removes it. Open Windows Security or your third-party antivirus. Check the Protection History or Quarantine section. If found, select the file and choose Restore . This usually happens when the game file is