In the same Compatibility tab, check Disable fullscreen optimizations . Some users also find success running the game in Windows 7 or 8 compatibility mode . 4. Update Essential Drivers
If the game lacks the administrative rights to read its own files, it may trigger a bigfile error.
Look for files named bigfile.000.tiger through bigfile.00x.tiger . rise of the tomb raider bigfile000 error better
A bigfile error can sometimes be a secondary symptom of a graphics driver that can't handle the game's data stream.
Modern security software often flags the game's large data files as false positives, preventing them from opening. In the same Compatibility tab, check Disable fullscreen
Try disabling your antivirus temporarily before launching the game to see if it resolves the error. 3. Permissions and Compatibility Tweaks
Delete the specific file mentioned in the error (usually bigfile.000.tiger ). Update Essential Drivers If the game lacks the
Go to your Steam/Epic Games library, right-click the game, select Properties > Installed Files , and click Verify Integrity of Game Files . The launcher will now be forced to download a fresh, clean copy of that specific archive. 2. Bypass Antivirus Interference
The most common cause is "bitrot" or a corrupted section within the large .tiger files that the standard "Verify Integrity" check sometimes misses.