15.7% of cases
The launcher will detect the missing file block and clean-download a fresh, uncorrupted version. 2. Configure Administrator and Compatibility Rights
The error in Rise of the Tomb Raider is caused by corrupted game files, interrupted updates, or restricted system permissions. This fatal error triggers during launch or map transitions, preventing the Crystal Dynamics engine from reading the compressed resource archives ( .tiger or bigfile formats). Technical Causes of the Bigfile Error
Temporarily disable your antivirus to see if the game launches without it. Run as Administrator : Right-click the game's executable ( ) in the installation folder and select Run as Administrator to bypass potential permission issues. Advanced Troubleshooting Move to Primary Drive Rise Of The Tomb Raider Unable To Open Bigfile.000
Ensure your primary system drive (usually C: ) has at least for Windows virtual paging. Navigate to your game installation directory. Right-click on ROTTR.exe and select Properties . Go to the Compatibility tab. Check Run this program as an administrator .
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If validation utilities do not register the damage, you must force a manual rebuild: This fatal error triggers during launch or map
blocking the game's file access privileges. Storage drive failures or file system fragmentation. System memory depletion or storage drive bottlenecks. Step-by-Step Fixes for "Unable to Open Bigfile.000" 1. Verify Game File Integrity
The error typically stems from one of four issues:
This specific error is notorious because Rise of the Tomb Raider uses a proprietary archive format that is sensitive to read interruptions. Unlike games that load small assets individually, this game loads massive chunks of data directly from bigfile.000 . If your hard drive has any bad sectors, or if your RAM is unstable (run a MemTest if errors persist), the file’s checksum will fail at launch. Advanced Troubleshooting Move to Primary Drive Ensure your
(Steam, Epic, or Xbox) are you currently using to run the game?
The game may lack read permissions for BIGFILE.000 .