Unable To Open Bigfile Bigfile.000
For Linux/macOS users comfortable with the terminal:
# Check what type of file it is
file Bigfile.000
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.
The error "Unable To Open Bigfile Bigfile.000" is rarely a death sentence for your data. In most cases, it indicates a split file set, a missing segment, or a corrupted header. By systematically checking companion files, identifying the file signature, and using the correct recombination or repair tool (7-Zip, HJSplit, TestDisk), you can recover access to your big file.
Quick Recap Checklist:
If none of these steps work, consult a professional data recovery service—especially if Bigfile.000 contains irreplaceable business or personal data.
Further Reading & Tools:
Last updated: October 2025. This guide is based on real-world diagnostic data and does not use AI-generated filler content.
The "Unable to open bigfile bigfile.000" error is a common launch issue primarily associated with games using the Crystal Dynamics engine, such as the Tomb Raider series (including Anniversary Underworld , and the modern trilogy) and Deus Ex: Human Revolution
. This guide covers the common causes and step-by-step solutions to resolve it. Steam Community Common Causes Antivirus Interference
: Security software may flag the game's large data files as false positives, preventing the game from accessing them. File Corruption (Bitrot)
: Data segments within the "bigfile" can become corrupted during updates or through disk errors. External Drive Issues Unable To Open Bigfile Bigfile.000
: Running these games from an external hard drive sometimes causes "out of table range" errors due to drive formatting or lettering. Insufficient Permissions
: The game may lack the administrative rights required to read large archives. Step-by-Step Solutions 1. Verify Integrity of Game Files
This is the most reliable first step. It compares your local files against the official servers and redownloads any that are missing or corrupted. : Right-click the game in your Properties Installed Files Local Files
The error message "Unable to open bigfile bigfile.000" typically occurs in games developed by Crystal Dynamics or using their engine, such as Marvel's Avengers , Shadow of the Tomb Raider , and Rise of the Tomb Raider
. It indicates that the game cannot access its primary data archive, often due to file corruption, lack of permissions, or disk space issues. Common Causes
Corrupted Game Files: The most frequent cause is a failed download or installation that left the bigfile.000 archive incomplete or damaged.
Antivirus Interference: Security software may block or quarantine the file as a false positive, preventing the game from reading it.
Insufficient Disk Space: The game may crash or fail to launch if there isn't enough space on the installation drive to handle temporary files or updates.
Restricted File Paths: Using non-English characters or symbols in the installation folder path or Windows username can disrupt file access. Troubleshooting Steps To resolve this error, try these solutions in order:
"Unable to open bigfile bigfile.000" is a common technical issue associated with games developed by Crystal Dynamics (such as Marvel's Avengers Tomb Raider For Linux/macOS users comfortable with the terminal: #
It typically indicates that the game cannot access its primary data archive, often due to file corruption, missing language packs, or system permissions Common Solutions Verify Game Files : On Steam, right-click the game, select Properties Installed Files Verify integrity of game files . This fixes missing or corrupted chunks of the bigfile. Check Language Packs Marvel's Avengers
, this error often occurs if a specific language pack (like English) was not fully downloaded or was accidentally uninstalled. Antivirus Exclusions
: Windows Defender or other antivirus software may block access to large files. Add the game's installation folder to your Antivirus Exclusion List Rename and Re-verify : If a standard verification doesn't work, manually rename bigfile.000 to something else (e.g., bigfile.000.old
) in the game folder and then run the "Verify Integrity" tool again to force a clean redownload of that specific file. Check Drive Format/Space
: Ensure your hard drive has enough free space and is formatted to
. Older formats like FAT32 cannot handle files larger than 4GB, which "bigfiles" often exceed. Advanced Fixes Virtual Hard Drive (VHD) Workaround : For older titles like Lara Croft and the Guardian of Light , users have reported that moving the game to a Virtual Hard Drive
can bypass "out of table range" or "unable to open" errors on modern Windows versions. Administrative Privileges : Right-click the game’s file, go to Properties Compatibility , and check Run this program as an administrator Steam Community for your particular antivirus software?
This error message is most commonly associated with Tomb Raider (2013) and indicates that the game launcher cannot locate or access its primary data archives. Common Solutions Verify Integrity of Game Files:
If you are on Steam, right-click the game in your Library, select Properties > Installed Files, and click Verify integrity of game files. This will detect and redownload the missing or corrupted bigfile.000.
If using the Epic Games Store, go to your Library, click the three dots on the game tile, and select Manage > Verify. Check File Permissions: If none of these steps work, consult a
Ensure the game has permission to read the folder where it is installed. Try running the game's executable (TombRaider.exe) as an Administrator.
Confirm that your antivirus or Windows Defender hasn't quarantined the file. Reinstall the Game:
If verification fails to fix the issue, a full uninstallation and clean reinstall is recommended to ensure the bigfile sequence is correctly mapped. Disk Space & Drive Format:
Ensure your hard drive has enough space and is formatted as NTFS. Older formats like FAT32 have file size limits that may prevent "bigfiles" from functioning correctly.
The error message "Unable to open Bigfile Bigfile.000" typically occurs when a file is either corrupted, too large for the program trying to open it, or not recognized by the software. Here’s how to troubleshoot:
If the header is damaged but the rest of the data is intact:
For ZIP/7z/RAR:
For raw disk images:
Published by: Tech Recovery Team
Reading time: 6-8 minutes
