If verifying the files does not work, try these steps in order: Closed - Unable to initialize Steam API - TaleWorlds Forums

The safest and most effective way to restore a missing or corrupted steam_api.dll is to let Steam redownload it directly from official servers. Open your .

Right-click the game that is showing the error and select . Go to the Installed Files (or Local Files ) tab. Click Verify integrity of game files .

You may need to install steam. I get that error if I forgot to start up Steam before starting up Bannerlord. 0. TaleWorlds Forums How To Fix Unable to Initialize Steam API Error