What are you deploying to? (Windows, Linux, macOS)

Building Unreal Engine 4 from its GitHub source code creates a completely standalone directory. This directory can be zipped up, moved via a USB drive to any offline machine, and run without ever installing the Epic Games Launcher. Step 1: Link Your Epic Games and GitHub Accounts

Install UE4 on air-gapped computers, secure networks, or at locations with slow/limited data.

Malicious payloads, keyloggers, or crypto-mining malware disguised as engine files.

Once the clone is complete, compress the folder into a multi-part archive:

Epic Games frequently updates its launcher. Keeping an offline archive ensures you can always reinstall a specific, stable version of UE4 required for a legacy project.

Plug the drive into your offline computer and transfer the files.

Go to the and log into your account.

Copy the entire UE_4.XX folder to an external storage device. Depending on the version and target platforms, this folder will range from 15 GB to 40 GB. Step 3: Transfer to the Offline Machine

Note: This method is more complex and less reliable than simply copying the fully installed engine folder (Method 1). Essential Steps After Offline Installation

To download the UE4 offline installer, follow these steps:

Step 4: Deploy and Compile on the Offline Workstation

Downloading the engine once saves hundreds of gigabytes of data when deploying to multiple machines in a studio or school lab.

Before deploying to many machines, test your offline installation process on a representative target machine. Verify that the editor launches correctly, that projects can be opened, and that all desired features work as expected.

The offline installer for UE4 offers several advantages, including: