The official Windows Vista SP2 or Windows Server 2008 SP2 ISO obtained from The Internet Archive (free) or Microsoft MSDN (professional).
If a website offers you a "Windows NT 6.0 Download – Latest Version 2024," close the tab immediately. Microsoft ended development in 2012. Any "new" version is a virus.
If you have landed on this page searching for the term you are likely a tech enthusiast, a legacy software developer, or an IT administrator dealing with older infrastructure. You may be confused, or you may know exactly what you are looking for: the Microsoft Windows operating system kernel version 6.0.
Disclaimer: Downloading and installing unlicensed Microsoft software violates copyright law. This article is for educational and legacy support purposes only. Ensure you have a valid license.