Fixing "Rise of the Tomb Raider Unable to Open bigfile.000" – A Complete Guide

For fans of survival-action games, Rise of the Tomb Raider is a masterpiece. However, few things are more frustrating than clicking "Play" on Steam or Epic Games only to be greeted by a cryptic error message: "Unable to open bigfile.000."

Fix #2: Exclude the Game Folder from Windows Defender (or Third-Party AV)

Modern antivirus software uses "Behavioral Analysis." When Rise of the Tomb Raider tries to read a 10GB+ file (bigfile.000), the AV may flag it as ransomware-like behavior and block access.

Lack of proper read/write permissions can prevent the game from "opening" the file. unable to start game- bigfile bigfile.000! error

Solution 3: Disable Antivirus and Add Exceptions

Antivirus software sometimes blocks access to massive archive files like bigfile.000 during the scan process.

Navigate to your Rise of the Tomb Raider folder.
Delete (or move to a backup folder) the following files:

Rise Of The Tomb Raider Unable To Open Bigfile.000 =link= -

Fixing "Rise of the Tomb Raider Unable to Open bigfile.000" – A Complete Guide

Fix #2: Exclude the Game Folder from Windows Defender (or Third-Party AV)

Modern antivirus software uses "Behavioral Analysis." When Rise of the Tomb Raider tries to read a 10GB+ file (bigfile.000), the AV may flag it as ransomware-like behavior and block access. Rise Of The Tomb Raider Unable To Open Bigfile.000

Lack of proper read/write permissions can prevent the game from "opening" the file. unable to start game- bigfile bigfile.000! error Fixing "Rise of the Tomb Raider Unable to Open bigfile

Solution 3: Disable Antivirus and Add Exceptions

Antivirus software sometimes blocks access to massive archive files like bigfile.000 during the scan process. Navigate to your Rise of the Tomb Raider folder

Navigate to your Rise of the Tomb Raider folder.
Delete (or move to a backup folder) the following files: