, check for a "Steam Isolation" setting in the global configuration and turn it Useful Resources Online-Fix.me

Double-click the game’s .exe . Do launch through Steam. The first launch might take 10–15 seconds longer as the emulator initializes.

Backup Original Files: Before moving any files, rename or move the original steam_api.dll or steam_api64.dll in your game’s folder so you can revert if needed.

This is the core of the article. Follow these steps precisely.