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

Right-click on and select Properties .

Before diving into fixes, it helps to understand the root cause. The bigfile.000 is not a single file, but rather the first segment of a large container file (often split into .000 , .001 , .002 , etc.). The error typically arises due to:

Antivirus software sometimes blocks access to massive archive files like bigfile.000 during the scan process.

Security software is essential for protecting your PC, but it can sometimes be overly aggressive and mistakenly quarantine legitimate game files. It's possible your antivirus software has flagged the bigfile.000 file as a false positive (an incorrect threat detection), moved it to a quarantine zone, or is blocking the game from accessing it. This issue has been reported as a common cause for this error. Rise Of The Tomb Raider Unable To Open Bigfile.000

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

Before we jump into the solutions, it helps to understand what you're actually dealing with. The bigfile.000 is not just a random file; it's the used by several Tomb Raider titles developed by Crystal Dynamics. Essentially, it's a massive container file holding the vast majority of the game’s resources, including 3D models, textures, sounds, music, and critical game scripts. In Rise of the Tomb Raider , this file usually has a size of around 2 GB. The game needs to be able to read from this file continuously to load levels, characters, and sounds. If it can't, the game simply cannot function.

Open the Windows Start menu, type , and press Enter. Select Virus & threat protection . Right-click on and select Properties

System memory or virtual page file limits can prevent Windows from allocating the system cache required to read a multi-gigabyte bigfile archive.

Rise of the Tomb Raider Unable To Open Bigfile.000: Fixes & Solutions (2026 Guide)

It has been reported that in some cases, the bigfile.000 file can have its Read-only attribute turned on, preventing the game from writing to it or reading it properly. The error typically arises due to: Antivirus software

The year was 2016, and for Elias, the real tomb wasn't in Siberia—it was buried inside a 1TB hard drive.

Before fixing the error, it helps to understand the culprit. In Rise of the Tomb Raider (and many modern games), developers pack game assets (textures, sound, scripts, and cinematics) into large archive files to improve loading times and organization.

: Right-click the game in your Library > Properties > Installed Files > Verify integrity of game files .

To fix the error, you must resolve file corruption, storage drive bottlenecks, or security software blocks that prevent the game engine from accessing its main asset archive. The error usually causes the game to crash on startup or freeze abruptly during heavy asset-loading transitions.