This error typically appears when the game cannot access or load its large packed data files (bigfile000 and similar). Causes: corrupted game files, missing or blocked files (permissions/antivirus), interrupted installation/update, issues with the platform client (Steam/EGS), or problems with mods/cracked copies. The fix sequence below goes from safest/simple to more involved.
The error "Unable to open bigfile000.tiger" is rarely a hardware failure. It is usually a pathway issue caused by a Windows username with accents or special characters. By moving the game to a generic folder path (like D:\Games) or verifying the file cache, you should be able to resolve the issue and get Lara Croft back on her adventure.
This feature blocks apps from modifying files in Documents, Pictures, Downloads, etc. — but sometimes it overreaches. rise of the tomb raider unable to open bigfile000 top
Once you fix the error, follow these best practices to ensure it never returns:
Real-time protection often locks .tiger files because it doesn’t recognize the format. This error typically appears when the game cannot
For Windows Defender:
For third-party AV (Bitdefender, Norton, McAfee, etc.):
Look for "Ransomware Protection" or "Controlled Folder Access" and whitelist the game’s folder. For third-party AV (Bitdefender, Norton, McAfee, etc
If verification fails to repair the file, force a manual redownload.