Navigate to and select the entire directory where your game is installed (e.g., C:\Program Files (x86)\Steam\steamapps\common\Tomb Raider ).
Ensure the game has permission to read the folder where it is installed. Try running the game's executable ( TombRaider.exe ) as an . Unable To Open Bigfile Bigfile.000
Sometimes the game fails to open the file because it lacks necessary permissions. Navigate to and select the entire directory where
bigfile.000 bigfile.001 bigfile.002 ... bigfile.099 Unable To Open Bigfile Bigfile.000
Windows sometimes restricts applications from reading data inside the Program Files directory unless explicitly granted elevated permissions.