Unable To Open Bigfile Bigfile000 Exclusive [updated] -

This error essentially means the game engine is trying to access its primary data archive ( BIGFILE000 ) with "exclusive" read/write permissions but is being blocked by another process or a system restriction.

In 90% of cases, in the game's launcher settings fixes this error instantly. If that fails, administrative privileges and file verification are your next best bets.

Wait for the process to finish; it will automatically redownload any corrupted parts of the bigfile. 4. Check for Background Interference

Disable overlays from Discord, Steam, or NVIDIA GeForce Experience, as these sometimes interfere with how a game takes control of the screen. 5. Update Graphics Drivers

Sometimes the system prevents the game from gaining "exclusive" access to its own files because of Windows User Account Control (UAC) restrictions. Navigate to the folder where the game is installed. Right-click the game’s .exe file (e.g., TombRaider.exe ). Select Properties > Compatibility tab. Check the box Run this program as an administrator . Click Apply and restart the game. 3. Verify Game File Integrity

Are you seeing this error on a or a Windows PC , and which specific game are you trying to launch?

Here is a step-by-step guide to fixing the issue and getting back into your game. 1. Disable Exclusive Fullscreen

Try launching the game in standard "Fullscreen" or "Windowed" mode. 2. Run as Administrator

If you’ve encountered the error message you’re likely trying to run a game or application—most commonly associated with Square Enix titles like Tomb Raider , Deus Ex , or Hitman —and finding yourself stuck at a crash-to-desktop or a black screen.

Troubleshooting the "Unable to Open Bigfile BIGFILE000 Exclusive" Error