Go to Library, right-click Shadow of the Tomb Raider , select Properties > Local Files > Verify integrity of game files .
If the file sits on a corrupted sector of your hard drive, Windows will fail to read it. You can use the built-in Windows Check Disk tool to scan for and repair drive errors. Type in the Windows search bar. Right-click Command Prompt and choose Run as Administrator .
Scroll down to and click Add or remove exclusions .
This error is annoying but rarely fatal. Unable To Open Bigfile Bigfile.000
If you have an accompanying .md5 or .sha1 checksum file, run a checksum verification. If the checksum fails, the file is corrupt.
Overzealous security software might flag the massive file as a false positive and quarantine it.
If you see this error, do not waste time googling the exact string. Instead: Go to Library, right-click Shadow of the Tomb
Resolving this error usually requires restoring the integrity of the game's data or adjusting how the system interacts with the files.
Navigate manually to the old installation folder path and delete any leftover files or folders. Reboot your PC.
Recover data from the failing drive to a healthy drive before attempting to open bigfile.000 again. Type in the Windows search bar
FTK Imager gives a generic "Unable to open bigfile bigfile.000" when adding a raw split image.
The error "Unable to open bigfile bigfile.000" typically indicates a problem accessing a large segmented file (commonly named with numeric extensions like .000, .001) used by backup/archive tools, disk imaging software, or game/engine asset packages. Causes include file corruption, missing segments, incorrect tool or format, permission issues, filesystem limits, or insufficient disk space/memory. Fixing it requires systematic checks: verify files, use the right tool, confirm integrity, and ensure environment compatibility.