steam_api.dll steam_api64.dll ) missing error in Resident Evil 4 usually occurs because your antivirus software

Did this happen or after an update? Do you see a specific error code (like 126)? I can give you more specific steps based on those details.

"Code execution cannot proceed because steam-api.dll was not found."

The steam_api.dll file is a critical bridge used by games to access Steamworks features, including user authentication, achievements, and cloud saves.