Steam-api.dll Resident Evil 4 Download |link| -

: In non-licensed versions, the modified DLL used to bypass Steam DRM may not have been correctly copied into the game directory. How to Fix steam_api.dll Errors in Resident Evil 4 1. Restore from Antivirus Quarantine

If steam_api.dll is listed, select and add it to your exclusions/whitelist. 2. Verify Integrity of Game Files (Steam Version)

If your game worked previously and suddenly stopped, your antivirus likely moved the file to quarantine.