Not a game-breaking bug; usually a local PC issue. If you’re still stuck after verifying files, check Windows Event Viewer for disk errors or try installing on a different drive.
Antivirus software or lack of Administrator rights may block the game from "hooking" into its own directories. Verified Solutions 1. Verify Integrity of Game Files shadow of the tomb raider unable to open bigfile.000
: Add the entire game folder as an exception in your antivirus settings. Run as Admin : Right-click your game's file, go to Properties > Compatibility , and check Run this program as an administrator Disable Fullscreen Optimizations : While in the Compatibility tab, check Disable full-screen optimizations Not a game-breaking bug; usually a local PC issue
This is the most frequent culprit. Modern antivirus software can be overly aggressive with large packed archive files ( .tiger format) used by the Tomb Raider engine. If the antivirus quarantines bigfile.000 , the game suddenly finds a missing puzzle piece. Verified Solutions 1
In some cases, this error is a symptom of issues. Closing background processes in the Task Manager can help free up resources. System and Security Adjustments
: If your "Documents" folder is synced with OneDrive, the game may fail to read/write save data or configuration files required at startup. Ensure OneDrive is signed in and running. Version-Specific Notes