Let me know which you are using (Steam or Epic) and if you have any third-party antivirus software installed. YouTube·TellMeHow Rise of the Tomb Raider – How to Fix All Errors
If you're seeing the dreaded error when trying to launch Rise of the Tomb Raider
The “Unable to open BIGFILE.000 / BIGFILE.000.tiger” error in Rise of the Tomb Raider can be frustrating, but it is rarely a sign of permanent damage to your game or your system. In over 90% of cases, verifying game integrity or adjusting permissions resolves the issue immediately.
Add the entire Rise of the Tomb Raider installation folder to the list. Restart your computer and try launching the game again. Disable Exclusive Fullscreen and DX12 rise of the tomb raider unable to open bigfile000 top
The file was not downloaded correctly or became damaged.
The most common culprit is a corrupted data packet. If the bigfile000.tiger file was interrupted during download or damaged by a hard drive hiccup, the game cannot read it. Open your Steam Library. Right-click on Rise of the Tomb Raider. Select Properties, then go to the Installed Files tab. Click Verify integrity of game files.
A lack of available virtual memory or storage overhead inhibits the local decompression of game resources. Step-by-Step Resolution Protocol Let me know which you are using (Steam
Large asset blocks require stable virtual memory overhead to load. Type into the Windows Search bar.
A surprisingly common cause of the “Failed to open BIGFILE.000” error is the way the game is launched—not the files themselves. Some users have reported that the game launches without issue from the installation folder or a desktop shortcut, but fails when launched from a Start Menu tile or a third-party launcher.
Knowing these details will help pinpoint the exact fix for your system. Add the entire Rise of the Tomb Raider
Here is a comprehensive guide to troubleshooting and fixing this error on PC.
Does the crash happen or during a loading screen ?
Your antivirus (like Windows Defender) mistakenly flags the file as unsafe and blocks access.