Select bigfile.000 through bigfile.003 (or any specifically mentioned in your error prompt), right-click, and select Delete .
If none of the above steps resolve the issue, consider restoring the bigfile from a backup. This should be a last resort, as it may result in data loss. unable to open bigfile bigfile000 exclusive
Locate the files at the top of the folder labeled bigfile.000 or bigfile.000.tiger . Select bigfile
The error message is a critical failure that prevents a program—most commonly video games like Tomb Raider (2013) , Deus Ex: Human Revolution , or Sleeping Dogs —from accessing its primary data archives. These games utilize "bigfiles" to store textures, audio, and levels; if the engine cannot gain "exclusive" access to bigfile000 , the application simply won't launch. Understanding the "Exclusive" Access Requirement Locate the files at the top of the folder labeled bigfile
If this fails, the issue is OS/filesystem-level.
This error message typically originates from (Veritas/Symantec) or similar enterprise backup software running on Windows. The error unable to open bigfile bigfile000 exclusive indicates that the backup job is attempting to access a specific file—named bigfile000 —but cannot do so because another program or process is currently holding a lock on it.