C:\Program Files (x86)\Steam\steamapps\common\Shadow of the Tomb Raider).steam_appid.txt. (If it doesn't exist, you must create a new text document and name it this).Shadow of the Tomb Raider.exe directly from the folder, OR launch via Steam while running Steam as Administrator.Sometimes the Steam client lacks the permissions needed to initialize game engine files. Exit Steam : Right-click the Steam icon in your system tray and select Run as Admin : Right-click your Steam shortcut (or in the installation folder) and select Run as administrator Compatibility (Optional) : If the issue persists, right-click Properties Compatibility tab and check Run this program in compatibility mode for Windows 8 3. Verify Game File Integrity Corrupted game files often cause initialization failures. Right-click Shadow of the Tomb Raider in your Steam Library. Properties Installed Files Verify integrity of game files
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