This feature blocks apps from modifying files in Documents, Pictures, Downloads, etc. — but sometimes it overreaches.

Published by: Tech Resolve Archive
Difficulty: Low / Moderate
Time: 5–10 minutes

If you’re seeing the error message "Unable to open BIGFILE000.000.tiger" (or a similar variation like bigfile000.top) when trying to launch Rise of the Tomb Raider, you’re not alone. This cryptic error usually appears right after clicking "Play" on Steam or Epic Games, and it stops the game dead in its tracks.

The good news? It’s almost always a file permissions or anti-virus interference issue — not a corrupted game download.

  • Reinstall on a different drive if possible