Installing Windows 11 LTSC Insider Preview Build 25941 in a Virtual Machine

Windows offers a special edition called Long Term Servicing Channel (LTSC), also known as the "old‑sauce" version, which receives only security updates for 5‑10 years without functional upgrades and lacks features such as the Microsoft Store, Edge, and Cortana.

Based on Windows 10 Enterprise, the LTSC line includes LTSB 2015, LTSB 2016, LTSC 2019, and LTSC 2021; a Windows 11 LTSC preview (Build 25941) was recently leaked as an OEM test build and is expected to be publicly released in the second half of 2024.

Below are screenshots of the installation process in a virtual machine, showing how to skip the Microsoft account login by entering a non‑existent email (e.g., [email protected]).

Three version options appear during setup: a non‑IoT version, an IoT version, and a subscription version (which can be ignored). The two non‑subscription builds are functionally similar.

After installation, the desktop shows a watermark indicating the build is an Evaluation version of Windows 11 LTSC Insider Preview (Build 25941).

The system can be activated with HEU KMS Activator 42.0.1 by clicking the "Start" button, which applies a digital license.

Install the Simplified Chinese language pack and set it as the default display language, then reboot.

Download links for the LTSC build are provided (e.g., https://www.123pan.com/s/xY3DVv-PxjHA.html with extraction code rVIu, and https://www.alipan.com/s/iKuxZDxzy2p with code oUAy) along with the SHA‑256 checksum for verification.

Note: This preview is an early‑stage evaluation build and may contain bugs; it is not recommended for installation on physical hardware until the official release.