No internet required on the second machine; works without the launcher. You lose access to the Unreal Marketplace and easy project management tools. Epic Games Developers Offline Installer of Unreal Engine - Epic Games Developers
Tip: Keep the installed folder backed up on a hard drive. Future updates to the Launcher or Epic servers won't affect your local backup, ensuring you always have access to this specific version of the engine. download unreal engine 4.27 offline installer
Let the download run to , then pause and cancel the installation. Why? This forces the launcher to create the necessary folder structure and manifest files. No internet required on the second machine; works