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(Note: If you want, I can write a shorter product-style review, a user-experience rating, or a step-by-step install guide for a specific UE4 version.)
Open your Windows Start Menu, type Add or remove programs , and open it. Scroll down to find the Microsoft Visual C++ Redistributable (x64) installations. If you see versions from 2015-2022 that are highly updated, you can skip the UE4 setup altogether. If errors persist, uninstall the 2015-2022 packages, run the UE4PrereqSetup_x64.exe , and then reinstall the latest package from Microsoft's official site. Error: "0x80070643 - Fatal error during installation"
Epic Games does not host this file on a public webpage. Instead, it is bundled inside every Unreal Engine installation. However, you can extract it directly from Epic’s servers without installing the full 40GB engine.
To set up UE4 prerequisites x64, follow these steps: ue4 prerequisites x64 setup link download
Even after running the setup, launching your game displays a popup stating these specific .dll files are missing.
This is typically tied to a corrupted Windows Update cache or a conflict with active antivirus software blocking registry edits.
Note: This link points to the version bundled with the latest Epic Games Launcher. It is safe and signed by Epic Games. (Note: If you want, I can write a
If the launcher is stuck in an infinite loop asking for prerequisites: Epic Games Launcher Right-click your launcher shortcut and select Properties field, add a space and then -SkipBuildPatchPrereq at the end. Administrator Epic Games 2. Manual Visual C++ Update
If you're on a Steam Deck, use the Heroic Games Launcher or run the UE4PrereqSetup_x64.exe manually through Proton/Wine from the game's internal folders.
| Error Code / Issue | Possible Cause | Solution | | :--- | :--- | :--- | | | Windows is not up-to-date, or there is a conflict with existing Visual C++ redistributables. | Run Windows Update to install the latest patches. Then, go to Control Panel > Programs and Features , uninstall any Microsoft Visual C++ 2015 Redistributables , and rerun the UE4 installer. | | Error: 0x80070001 - Incorrect Function | The installer may have been interrupted by security software or system corruption. | 1. Temporarily disable third-party antivirus or firewall software. 2. Run the System File Checker tool: Open Command Prompt as Administrator and run sfc /scannow . 3. Try manually installing the latest Microsoft Visual C++ Redistributable packages from Microsoft's official website. | | The installer asks repeatedly for DirectX | The DirectX runtime may be missing or corrupted. | Download and install the latest DirectX End-User Runtime from Microsoft's official website. | | Installation fails without a specific error | General corruption or security interference. | 1. Install to an English-only path (e.g., C:\Game ) if the installer asks for a directory. 2. Restart your computer and try again. 3. As a last resort, consider performing a clean boot of Windows to eliminate software conflicts. | If errors persist, uninstall the 2015-2022 packages, run
: The most reliable way to ensure you have the correct prerequisites is to install them via the Epic Games Launcher
Below is a complete guide explaining what this software does, how to find the official download links, and how to fix common installation errors. 🛠️ What is the UE4 Prerequisites (x64) Installer?
If you are receiving a "Setup Failed" report (e.g., error 0x80070643 or 0x80070666), try these solutions:
It acts as a bridge between the game engine and your operating system, resolving common "missing DLL" errors and improving compatibility. Reliability: Developed by Epic Games , the package is 100% safe and standard for modern gaming. Common Issues: