If the game lacks the administrative rights to read its own files, it may trigger a bigfile error.
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
Delete the specific file mentioned in the error (usually bigfile.000.tiger ). rise of the tomb raider bigfile000 error better
Open your antivirus settings (like Windows Defender) and add the entire Rise of the Tomb Raider installation folder as an exclusion or exception .
Navigate to the game folder, right-click ROTTR.exe , and select Properties > Compatibility . Check Run this program as an administrator . If the game lacks the administrative rights to
Try disabling your antivirus temporarily before launching the game to see if it resolves the error. 3. Permissions and Compatibility Tweaks
Modern security software often flags the game's large data files as false positives, preventing them from opening. Navigate to the game folder, right-click ROTTR
Look for files named bigfile.000.tiger through bigfile.00x.tiger .