The UE4 prerequisite installer frequently crashes because a newer or corrupted version of the Visual C++ Redistributable is already on your PC. Installing the packages directly from Microsoft bypasses the Epic Games installer loop. Go to the official Microsoft Visual C++ download page.
Upon completion, the system may require a restart to finalize the integration of new system libraries. 5. Troubleshooting & Maintenance
Windows may throw an explicit error dialog stating that a specific file is missing from your computer. Common examples include: MSVCP140.dll VCRUNTIME140.dll D3DX9_43.dll
Standard or guest Windows user accounts lack the administrative privileges required to register new DLL frameworks. Always ensure you are logged into an Administrator account when running these setups. Ue4 Prerequisites -x64- Setup
Right-click on the problematic game and select > Installed Files > Browse .
: Newer or identical versions of the redistributables are already installed, causing the installer to hang or fail.
: Reinstall the latest Microsoft Visual C++ Redistributables directly from Microsoft. The UE4 prerequisite installer frequently crashes because a
Have you encountered a unique UE4 Prerequisites error? Share your experience in the comments below or check the official Unreal Engine forums for advanced troubleshooting.
Specifically versions ranging from 2015–2022, which provide the C++ libraries required by the engine's executable. Windows Universal C Runtime (CRT):
: This is typically not an issue for standard Windows users. For those running under compatibility layers, ensure the Wine environment is properly configured to handle Windows security permissions. Upon completion, the system may require a restart
When this option is enabled, Unreal Engine automatically creates a Redist folder inside your packaged build. Distributors like Steam, Epic Games Store, or GOG can be configured to automatically trigger this executable script in the background during the initial installation process on a user's machine. Final Thoughts
Beyond simple runtimes, the "Prerequisites -x64-" serves a more nuanced role as a By separating these system-level installations from the engine’s core files, Epic Games creates a clear boundary between user-space applications and kernel-level drivers. For instance, the installer often attempts to install the NVIDIA PhysX drivers. While PhysX is a physics engine, its deep integration with GPU acceleration requires system-level permissions that the main Unreal Editor should not have. By handling this in the prerequisites phase, the setup protects the engine from needing administrator rights during normal operation. Furthermore, if a prerequisite fails to install—for example, because the user is on a locked-down corporate PC or an outdated version of Windows 10—the failure happens early. This saves the user from downloading 20 GB of engine data only to discover their operating system is incompatible.
Yes – the installer downloads latest VC++ runtimes.
Open regedit and navigate to: