The UE4PrereqSetup_x64.exe file is automatically included in the package when you build (or "package") your Unreal Engine project for distribution. It can be found in a specific subfolder of your project's build directory:
Manual Installation Guide (For Developers and Advanced Users)
Accept the terms and allow it to complete.
There are two primary ways to obtain and install the prerequisites. Method 1: Locate the Installer Inside UE4 Engine Folder
A Windows internet API that enables games to communicate via HTTP/FTP protocols for online matchmaking, patches, and telemetry. Why is it Necessary?
After manually installing these, the will skip them and finish almost instantly the next time it runs.
Necessary for rendering graphics.
Because the UE4 package is largely a wrapper for Microsoft's own files, manually updating your Visual C++ libraries often bypasses a broken UE4 installer entirely.
The UE4 Prerequisites -x64- package (usually an .msi or .exe file) is a collection of libraries, frameworks, and runtime environments required for Unreal Engine to interface with Windows correctly. The "-x64-" denotes that these are designed for 64-bit versions of Windows, which is a requirement for modern UE4 development.
This confirms the x64 setup failed. Run the UE4PrereqSetup_x64.exe again as an administrator. 3. The Setup Takes Too Long or Freezes
If you have downloaded an indie game made in Unreal Engine, it may not have included the necessary runtime libraries. Running the prerequisite setup fixes the "dll missing" errors, allowing the game to start. How to Install UE4 Prerequisites -x64-