When the game detects an older CPU, it now automatically switches to a fallback executable ( u4-l.exe for Uncharted 4 or tll-l.exe for The Lost Legacy).
If your CPU lacks this instruction set, the game will usually crash instantly upon launch with no error message, or throw a system exception.
On , the developers at Iron Galaxy released a significant update that officially removes the AVX2 CPU restriction .
Wait a few moments; the Uncharted 4 introductory splash screen should appear, and the game will successfully boot past the initial crash point. Performance Trade-offs and Expectations
The good news is that you no longer need third-party "fix" files or risky community patches to play. . The Official Fix: Update Your Game uncharted+4+avx2+fix+free
Ensure you have the latest NVIDIA or AMD drivers installed, specifically those optimized for Uncharted 4 .
This guide will walk you through what AVX2 is, how it locks you out of the game, and—most importantly—the free methods available to bypass the restriction and start playing Uncharted 4 today.
AVX2 is a set of CPU instructions that helps with faster data processing, particularly for complex, modern game engines. Uncharted 4 uses these instructions heavily. If your CPU doesn't support them, the game cannot initiate. Game opens to a black screen and crashes immediately.
1. Official Solution: Update the Game Patch (Free & Recommended) When the game detects an older CPU, it
Download and unzip the fix files directly into the root folder of your Uncharted 4 installation (where Uncharted4.exe is located).
If the game still crashes or shows a black screen, you may need to force it to use the fallback exe file. Go to your game's installation folder (e.g., ...\steamapps\common\UNCHARTED Legacy of Thieves Collection ). You will see four .exe files:
When Uncharted 4: A Thief’s End and The Lost Legacy were bundled into the Legacy of Thieves Collection and released on PC in late 2022, fans of Nathan Drake rejoiced. Finally, the cinematic masterpiece that pushed the PS4 to its limits was available on desktops and laptops with unlocked frame rates and ultra-wide support.
If you used a modified .exe file that didn't work, use Steam or Epic's repair tool to restore your game to its original state before trying a different method. Wait a few moments; the Uncharted 4 introductory
AVX2 Safety and Correctness
Ensure you are using NVIDIA driver 526.98 or higher to resolve known stability issues.
This is the easiest and most performance-friendly method. Community members have modified the game's core binaries to bypass the strict hardware check.
Uncharted 4 was natively compiled using these AVX2 instruction sets. If you are running an older processor—such as an older Intel Core i5/i7 (pre-4th/5th generation) or some older AMD models—your CPU only supports older instruction sets like SSE or standard AVX.