This is the most common and successful fix. It forces your launcher to check every byte of the game files against the official server.
Rise of the Tomb Raider is a memory hog. If your RAM is full, the game dumps data into bigfile.000 . A small page file causes access violations. rise of the tomb raider bigfile000 error better
Rise of the Tomb Raider is a visually stunning and expansive game, but like many large-scale PC titles, it is prone to specific technical hiccups. Among the most frustrating of these is the "Bigfile000" error . This issue typically manifests in two ways: either as a crash to the desktop (CTD) accompanied by a generic error message referencing bigfile.000 , or as a startup failure where the game refuses to launch at all because it cannot locate or read this specific archive. This is the most common and successful fix
Determined, Elias dove into the dark corners of a legacy hardware forum. He found a post from 2016, buried under threads about overclocking. “If the tiger won’t wake,” the user 'Renegade_Raider' had written, If your RAM is full, the game dumps data into bigfile
If this is your first encounter with the error, start here.
If you're getting hit with the "Unable to open bigfile.000!" or "Disc error while reading file" message, you aren't alone. This usually happens when a massive game file gets corrupted during a patch or because of a minor drive error.