UE4PrereqSetup_x64.exe /quiet /norestart
Add /log install.log for troubleshooting.
To ensure your team or user base never hits a prerequisite wall, follow these four guidelines: ue4 prerequisites x64 setup exclusive
You will see this window under two common conditions: UE4PrereqSetup_x64
The standard UE4 prerequisite installer expects to download some components (like DirectX Web Installer). The exclusive full offline installer (often bundled with the engine source) includes all CAB files internally. Ensure you grab the Prereqs folder from the launcher installation, not the web installer. Add /log install