This is the most common and practical method for users without organizational access.
Click the green button and select Download ZIP , or clone the repository using Git command line tools. Step 3: Run the Dependency Setup Offline Unreal Engine 4 Download Offline Installer
For most users, this is the only official way to get the engine. This is the most common and practical method
Download the Unreal Engine documentation in PDF or HTML format, as the "F1" help key will not work without internet. Unreal Engine 4 Download Offline Installer