Rise Of The Tomb Raider Unable To Open Bigfile.000 -

If validation utilities do not register the damage, you must force a manual rebuild:

Crashing during a tense gaming session is incredibly frustrating. For players of Rise of the Tomb Raider , one of the most disruptive issues is the error. This error completely halts your game, usually preventing it from launching or causing sudden crashes during loading screens.

Security software can mistakenly flag bigfile.000 as a threat and block access, leading to technical issues .

Temporarily disable your antivirus to test if the game launches. If it works, add the Rise of the Tomb Raider installation folder to your antivirus exclusion list Rename and Redownload

Press Win + I → (Windows 11) or Update & Security (Windows 10).

Ensure your drive has at least 5–10 GB of free space for temporary files.

Windows Defender or third-party AV flagged the file as dangerous and quarantined/locked it.

If the files exist but cannot be accessed:

Windows 10/11 introduces “Fullscreen Optimizations,” which can interfere with how the game reads system memory and files.

A brief internet drop during installation or a game update can corrupt the file.

The error message is the symptom. The underlying causes can vary, but they almost always fall into one of these categories:

: Part of the file was corrupted during a patch or installation.

The most common cause is a corrupt bigfile.000 during the initial download or an update. Instead of reinstalling the entire game, use the built-in repair tools: