The Tomb Raider Unable To Open Bigfile.000 [patched]: Rise Of

Under Virus & threat protection settings , click .

If the file is missing or corrupted, the platform launcher (Steam/Epic/Microsoft Store) can repair it.

Before changing system settings, check for download corruption. Your game launcher can scan the bigfile.000 asset and automatically replace it if it is corrupted. For Steam Users: Open your . Right-click Rise of the Tomb Raider and select Properties . Navigate to the Installed Files tab. Click Verify integrity of game files .

This error essentially prevents the game from accessing its core data files, making it impossible to launch or play. Fortunately, this is usually a fixable issue related to file paths, permissions, or corrupted data. Rise Of The Tomb Raider Unable To Open Bigfile.000

How to Fix "Unable to Open Bigfile.000" in Rise of the Tomb Raider

: The game was interrupted or data blocks were misaligned during installation or a major game update.

When the error occurs, the user typically experiences the following: Under Virus & threat protection settings , click

Go to the game installation folder and locate the main executable: . Right-click the file and select Properties . Click on the Compatibility tab. Check the box for "Disable fullscreen optimizations" . Check the box for "Run this program as an administrator" .

How to Fix the "Rise Of The Tomb Raider Unable To Open Bigfile.000" Error

If verification fails to fix the issue, a clean reinstallation might be necessary. However, there's a more effective way to do this than a standard uninstall/reinstall loop: Your game launcher can scan the bigfile

Security software sometimes flags large game archives as suspicious, blocking the game's access to them.

Click the (or Local Files ) tab on the left menu. Click Verify integrity of game files .

Standard verification tools often miss deep file corruption if the total file size appears correct on paper. Forcing a targeted redownload is the most reliable strategy. Open .

Third-party suites and native Windows Defender often trigger false positives on compressed asset archives like bigfiles.

Try these solutions in order. The first method resolves the issue for 80% of users.