If you're trying to play Far Cry 4 on a PC with a dual-core processor (like an Intel Core i3 or older Pentium), you've likely encountered the frustrating black screen on startup. This happens because the game's engine is hardcoded to require four threads to launch.
The community-standard solution is the Dual Core Fix, which uses Extreme Injector to bypass this check. Here is a comprehensive guide to setting it up on Windows 10, especially for repack versions. Required Files
Before starting, ensure you have the following in your game's bin folder:
Extreme Injector v3.x (v3.6.1 or v3.7.3 are widely recommended).
dualcore.dll: The specific library that tricks the game into seeing additional cores. Step-by-Step Installation Guide
To apply the fix to a Windows 10 repack, follow these steps: i far cry 4 dual core fix extreme injector windows 10 repack
Extract Files: Copy ExtremeInjector.exe and dualcore.dll directly into the Far Cry 4/bin/ directory.
Configure Administrator Rights: Right-click ExtremeInjector.exe, go to Properties > Compatibility, and check Run this program as an administrator. Do the same for the FarCry4.exe. Setup Extreme Injector: Launch Extreme Injector. In the Process Name box, type FarCry4.exe.
Click Add DLL and select the dualcore.dll you placed in the bin folder. Injection Settings: Go to Settings within the injector. For most repacks, ticking Auto-Inject is easiest.
Note for Legit/Struggling Versions: If the game still crashes, deselect Auto-Inject. Launch the game first, then quickly switch back to the injector and hit Inject manually 4–5 times while the game is loading. Optimization for Windows 10 Repacks
Windows 10 users often face additional compatibility hurdles. Try these tweaks if the fix doesn't work immediately: If you're trying to play Far Cry 4
Because the exact keyword "extreme injector" appears, let’s address it directly for archival purposes.
What is Extreme Injector?
A tool created by “master131” on UnknownCheats, originally for injecting custom DLLs into any Windows process. It uses various injection techniques (Thread Hijacking, APC, Manual Map). Gamers used it to apply memory mods in GTA V, Dark Souls, and yes, Far Cry 4.
The 2015 Far Cry 4 Use Case:
A user named Voksi (infamous for bypassing Denuvo) released a dual-core injector DLL. The process was:
VoksiDualCoreFix.dll.Why you should NOT download an "Extreme Injector Far Cry 4 Repack" in 2023: | Risk Factor | Details | |-------------|---------| | Trojanized releases | Many repack sites (OceanofGames, IGG-Games) bundle injectors with backdoors. | | Windows 10 SmartScreen | Will block execution; overriding is dangerous. | | Steam/Epic Bans | If you own a legit copy and inject anything, Easy Anti-Cheat (not in FC4) doesn’t apply, but Uplay overlay might flag modified DLLs. | | False positives | Even clean injectors use rootkit-like techniques (Manual Map). Antivirus will quarantine, leaving you with a broken game. |
Verdict: There is zero benefit to using Extreme Injector over the simple DLL replacement in 2023. The only scenario would be if your repack is so corrupted that DLL file replacement fails due to a file system filter driver – but then you should just download a proper repack. Launch Far Cry 4
FC4.dll from 2014) often trigger antivirus false positives and are incompatible with Windows 10’s security features (DEP, ASLR).If you downloaded a repack specifically tagged with "dual core fix extreme injector windows 10", follow this audit:
.bat file (e.g., Verify BIN files.cmd). Run it._Redist folder – Install DirectX, VC++ 2015-2022, and PhysX.ExtremeInjector.exe, delete it immediately. Search for FC64_patched.dll instead.DisableCPUCoreCheck.reg. Merge it (it adds HKEY_CURRENT_USER\Software\Ubisoft\Far Cry 4\ key with DisableCoreCheck DWORD = 1).Once the fix is active, you won’t have a smooth 60 FPS on a Pentium or old i3. Here is how to optimize:
In-Game Settings:
Windows 10 Tweaks:
FarCry4.exe → Properties → Compatibility → Disable fullscreen optimizations).In Extreme Injector:
With these settings, expect 25-40 FPS on a 2.8GHz Core 2 Duo or 30-50 FPS on a 4th gen i3.