The “x64” means it installs 64‑bit versions of VC++ redistributables (e.g., vcredist_x64.exe). However, some older UE4 games also need 32‑bit runtimes. If those are missing, the installer may succeed but the game still crashes with “0xc000007b” or missing DLL errors — a silent failure.
msiexec /unregister msiexec /regserver
If the automatic setup fails, users can manually locate the installer within the game or engine directory: [Game Install Path]\Engine\Extras\Redist\en-us\UE4PrereqSetup_x64.exe . ue4 prerequisites x64 setup exclusive
To successfully complete the prerequisite installation, the following system standards are recommended: : Windows 7/10/11 64-bit. Processor : Quad-core Intel or AMD, 2.5 GHz or higher. The “x64” means it installs 64‑bit versions of