Download Unreal Engine 4.27 Offline Installer ((install)) Instant

There is no official offline installer. You must download through the launcher first, then you can copy/backup the installed folder for offline use.

Git LFS, access to Epic's GitHub organization (you must link your GitHub account to your Epic account). download unreal engine 4.27 offline installer

You have your UE_4.27_Full.zip and the prerequisites folder. Now, set up a completely offline PC (air-gapped). There is no official offline installer

This zip file is now your . Copy it to any USB drive or network share. On a target offline machine, simply extract it to C:\Program Files\Epic Games\ and run Engine\Binaries\Win64\UE4Editor.exe . You have your UE_4

This article will walk you through exactly how to obtain, verify, and store the standalone installer for UE 4.27.2 (the final patch).

You can now copy it to a USB drive, NAS, or backup HDD.

"MajorVersion": 4, "MinorVersion": 27, "PatchVersion": 2, "Changelist": 18319896, "CompatibleChangelist": 18319896, "IsLicenseeVersion": 0, "IsPromotedBuild": 1