Windows/Versions

Desktop

Windows 10

• Windows 10, version 20H2 (build 19042) - EOL'd May 9, 2023
• Windows 10 Pro 19H2 version 1909 - EOL'd on May 10, 2022
• Windows 10 LTSC 1809 - future EOL 2029
• Windows 10 Pro 1703 - EOL'd in 2019
• Windows 10 1607 (LTSC) - future EOL October 13, 2026

Server

Windows Server 2025

"Windows Server 2025 is based on Windows 11, version 24H2." 
Release: November 1, 2024

Windows Server 2022

"Windows Server 2022 is based on a modified version of Windows 10, version 21H2." 
Release: August 18, 2021

Windows Server 2019

"Windows Server 2019 is based on Windows 10, version 1809" 
Release: October 2, 2018

Windows Server 2016

"Windows Server 2016 is based on Windows 10, version 1607" 
Release: October 12, 2016

Windows Server 2012

"Windows Server 2012 R2 is based on Windows 8.1." 
"Windows Server 2012 is based on Windows 8" 
R2 Release: October 17, 2023
Release September 4, 2012

Windows Server 2008

"Windows Server 2008 is based on Windows Vista SP1" 
"Windows Server 2008 R2 is based on Windows 7." 
R2 Release: October 22, 2009
Release: February 17, 2008

Windows Server 2003

"Windows Server 2003 is based on a modified version of Windows XP." 
R2 Release: December 6, 2005
Release: April 24, 2003

Windows Server 2000

Release: December 15, 1999

Windows NT Server

• Windows NT 4.0 Server (August 24, 1996)
• Windows NT Server 3.51 (May 30, 1995)
• Windows NT Server 3.5 (September 21, 1994)
• Windows NT 3.1 Advanced Server (July 27, 1993)