Navigate to: ...\SteamLibrary\steamapps\common\Shadow of the Tomb Raider . Locate bigfile.000.tiger through bigfile.011.tiger . Delete these files.

If you've installed mods or software that may be interfering with the game:

Below is a deep dive into what causes this error and the step-by-step solutions to fix it permanently.

The bigfile.000 file is a core archive containing most of the game's essential data—like models, textures, sounds, and level information. It's part of a series of .tiger archives (e.g., bigfile.001.tiger , bigfile.002.tiger ) that hold these assets. If the game can't access this file, it can't run.

Alternatively, download the latest drivers from the official or AMD websites. Summary Checklist Run Verify Integrity in Steam/Epic. Run as Admin . Add Antivirus Exclusions . Free up storage space. Update graphics drivers .