Most players encounter this error due to one of three reasons:

Resident Evil 4 (whether the 2005 classic or the 2023 remake) remains one of the most played survival horror games on PC. However, many players encounter the dreaded or "steam_api.dll not found" error when trying to launch the game.

Sudden system shutdowns or disk errors can corrupt the existing DLL. How to Safely Download and Fix Steam-api.dll

Instead of downloading the DLL individually, you need to restore the legitimate version. Here’s how: