Rise Of The Tomb Raider Unable To Open Bigfile.000 Hot! May 2026

Fix: "Rise of the Tomb Raider Unable to Open Bigfile.000" – A Complete Guide

This is a niche but effective fix for users who installed the game on a secondary or external hard drive. Sometimes, the game engine hard-codes a drive letter expectation (e.g., "D:") that changes after a reboot.

1. Go to your Library.
2. Click the three dots next to the game title.
3. Select Verify.

Step 1: Verify game files

1. Uninstall the game.
2. When reinstalling, choose a file path that is short and contains no special characters.