Copy the file into the game’s root installation folder (where the .exe is located).
Never copy just the .ini .
How to Fix Steam API Errors: A Guide to steam_api.ini and Missing DLLs steamapi ini download install
A crash during installation or an update can lead to file corruption. Copy the file into the game’s root installation
To make sure this works for you, I can provide a specific steam_api.ini config if you tell me: What are you trying to fix? Which emulator (Goldberg, CODEX, etc.) are you using? Are you trying to change the language or unlock DLC ? steamapi ini download install