Click the green "Code" button and select Download ZIP . This is your "Source Offline Installer."
Epic Games does provide a standalone offline installer for Unreal Engine 4.27. The official distribution method is via the Epic Games Launcher , which requires an internet connection for download and initial installation. However, users can create their own offline installer after downloading the engine once. Third-party websites offering pre-packaged UE 4.27 offline installers are unauthorized and may contain malware or violate Epic’s EULA. download full unreal engine 427 offline installer
Epic Games provides a standalone offline installer specifically for organizations. Click the green "Code" button and select Download ZIP