You need a valid key from: https://steamcommunity.com/dev/apikey
In this guide, we’ll break down exactly what this file does and, more importantly, how to get your game running again. What is the steam-api.ini File? missing steam-api.ini file
Several factors can lead to the steam-api.ini file being missing: You need a valid key from: https://steamcommunity
The second time, three days later, he noticed the file wasn’t just missing—the entire directory had been wiped clean of any .ini files. No traces in system logs, no deletion timestamps. The backup restore worked again, but Mark enabled filesystem auditing this time. He told himself it was due diligence. No traces in system logs, no deletion timestamps
: If you are seeing this error on a game you legally own, it is likely a different DLL error (like steam_api.dll ). Right-click the game in your Steam Library Properties Installed Files , and click Verify integrity of game files : Be extremely cautious when downloading standalone