Which is currently active on your system?
Residual configuration conflicts can sometimes lock the API file. Uninstall Resident Evil 4 via Steam. Exit the Steam client completely. Steam Api.dll Resident Evil 4 Hd
This is the most reliable fix for legitimate owners. Steam has a built-in tool to check its games for corruption and automatically fix them. Which is currently active on your system
Resident Evil 4 HD relies heavily on specific runtime libraries to execute .dll files properly. Corrupted runtimes can trigger generic DLL errors. Steam Api.dll Resident Evil 4 Hd