Right-click (in the game's installation folder) and select Properties .
To resolve this issue, follow the troubleshooting steps below in order.
ensure Steam has high-level permissions or that your game files are completely intact Primary Fixes Run Steam as Administrator
If the error persists, there may be a structural issue with how the Steam client is reading the game files.
If these steps fail, you may need to reinstall the Steam client itself to repair a potentially broken Steam service. How To Fix Steam Initialization Failed