Run Setup.bat – this downloads all dependencies (around 12-15 GB).
As of 2025, Epic has not released an official .msi or .exe standalone installer. Their support document (Zendesk #4721) explicitly states: "We do not provide offline installers. Developers with security needs should use GitHub and compile internally."
The Unreal Engine 4 (UE4) Offline Installer is a standalone version of the engine designed primarily for large organizations, educational institutions, and developers with paid subscriptions who need to deploy the software without a persistent internet connection. Unlike the standard installer, it functions independently of the Epic Games Launcher. Core Offline Installer Features
Standalone Deployment: Allows for installation on multiple machines (e.g., in a school lab or studio) without requiring each computer to download gigabytes of data individually.
Silent Installation: Supports command-line execution for automated, large-scale deployments across an organization’s network. Unreal Engine 4 Download Offline Installer
Customizable Components: Admins can use the installer wizard to select specific engine components, such as target platforms (Android, iOS) or debugging symbols, to save disk space.
No Launcher Requirement: It does not require the Epic Games Launcher to run the editor, though this means you lose integrated access to the Unreal Marketplace and automated project management.
Persistent Environment: Once installed, the editor can be used entirely offline for asset creation, coding, and world building. Availability & Access
The offline installer is not a general public download and is restricted based on user type: Run Setup
Organization Admins: Available via the Epic Games Developer Portal for those who have purchased Unreal Engine seats or subscriptions.
Educational Institutions: Schools can request access through a specific offline request form to manage lab environments.
Standard Users: Regular users typically must download via the Epic Games Launcher or compile from GitHub source code for an offline-ready build. Technical Requirements (Windows)
To run the installed engine effectively, your hardware should meet these recommended specifications: Offline Installation - Unreal Engine Forums The Unreal Engine 4 (UE4) Offline Installer is
If you need to install UE4 on an offline machine, you must download the files on an online computer first and transfer them.
Step 1: Download on an Online Computer
Step 2: Transfer the Files
Step 3: Install on the Offline Computer
If you need to compile C++ projects on an offline PC, you must also bring a Visual Studio Build Tools offline installer. Download vs_BuildTools.exe online with --layout parameter.