If you own the game on Steam, the client can automatically scan your game folder and re-download any missing or corrupted files, including steam_api.dll . Launch the client. Navigate to your Library . Right-click on Resident Evil 6 and select Properties .

This is the most common cause. Antivirus programs and Windows Defender frequently flag steam_api.dll as a false positive threat because it hooks directly into your system processes to communicate with Steam. Your security software may have automatically quarantined or deleted it.

If you have a legitimate reason to manually add the file, follow these steps carefully:

No, the DLL itself is not copyrighted in a way that restricts personal use. However, using it to bypass Steam DRM for pirated copies is illegal. This guide assumes you own the game.

Enter steam_api.dll into their search database.