Rise Of The Tomb Raider Unable To Open Bigfile000 Top May 2026

The file bigfile000.tiger might be corrupted or missing a few kilobytes of data.

Published by: Tech Resolve Archive
Difficulty: Low / Moderate
Time: 5–10 minutes

If you’re seeing the error message "Unable to open BIGFILE000.000.tiger" (or a similar variation like bigfile000.top) when trying to launch Rise of the Tomb Raider, you’re not alone. This cryptic error usually appears right after clicking "Play" on Steam or Epic Games, and it stops the game dead in its tracks. rise of the tomb raider unable to open bigfile000 top

The good news? It’s almost always a file permissions or anti-virus interference issue — not a corrupted game download.

This feature blocks apps from modifying files in Documents, Pictures, Downloads, etc. — but sometimes it overreaches. The file bigfile000

BIGFILE archives are the game’s packed data files (textures, sounds, levels). The game needs read/write access to the first archive (bigfile.000.tiger or .top) during startup. When Windows or your security software blocks that access, the engine throws this error.

If verification fails to repair the file, force a manual redownload. The good news

If your game is installed in a system-protected location like C:\Program Files, Windows permissions can get aggressive.

The error stems from one of the following:

| Cause Category | Specific Reason | Likelihood | |----------------|----------------|-------------| | File Corruption | Incomplete download, patching error, or disk write error | High | | Permission Restriction | Antivirus/ransomware protection blocking game access to .tiger files | High | | File Path/Name Mismatch | Incorrect case sensitivity (rare on NTFS but possible on Linux/Proton) or renamed/moved file | Medium | | Disk Errors | Bad sectors on HDD/SSD where the archive resides | Low | | Third-Party Interference | Overlay software (Discord, NVIDIA GeForce Experience), mod loaders, or file hooks | Medium |