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

Some anti-virus software (Avast, McAfee, Bitdefender, etc.) quarantines or blocks .000 files as a false positive.

Steps:

Sometimes, Windows security settings prevent the game from reading its own files.

The game may lack read permissions for BIGFILE.000. Rise Of The Tomb Raider Unable To Open Bigfile.000

Steps:

If the files exist but cannot be accessed:

Target: 15.7% of cases

A physically failing hard drive can cause this error. If the drive has bad sectors, bigfile.000 might exist but cannot be read.

Even as an administrator, your user account may lack explicit permissions to access system-protected folders.

Steps:

Since the error points to a specific missing or corrupt file, the first step is to let the game launcher check itself.

For Steam Users:

For Epic Games Store Users:

Why this works: The verification process compares your local files to the master version on the server. If bigfile.000 is even 1 byte off, it gets replaced.