Windows NT 6.x

Windows NT 6.x is a family of Microsoft Windows NT, starting with Vista and ending with 8.1. So far, Windows Vista is the only OS to have no support at all.

Versions

OS	Date	Build	NT Version	Support status
Windows Vista	January 30, 2007 (2007-01-30)	Windows Vista Starter, Windows Vista Home Basic, Windows Vista Home Premium, Windows Vista Business, Windows Vista Enterprise	NT 6.0	Mainstream support ended on April 10, 2012. Extended support ended on April 11, 2017.
Windows Server 2008	February 27, 2008 (2008-02-27)	Windows Server 2008 Standard		Mainstream support ended on January 13, 2015. Extended support will end on January 14, 2020 (2020-01-14)
Windows 7	July 22, 2009 (2009-07-22)	Windows 7 Home Premium, Windows 7 Enterprise, Windows 7 Professional	NT 6.1	Mainstream support ended on January 13, 2015. Extended support that excludes Professional and Enterprise will end on January 14, 2020 (2020-01-14). Extended support for Professional and Enterprise will end on January 10, 2023 (2023-01-10)
Windows Server 2008 R2	October 22, 2009 (2009-10-22)	Applies for Windows Server 2008 R1.		Mainstream support ended on January 13, 2015. Extended support will end on January 14, 2020 (2020-01-14)
Windows Server 2012	September 4, 2012 (2012-09-04)	Windows Server 2012 Foundations, Windows Server 2012 Essentials, Windows Server 2012 Standard	NT 6.2	Mainstream support ended on October 9, 2018. Extended support will end on October 10, 2023 (2023-10-10)
Windows 8	October 26, 2012 (2012-10-26)	Windows 8 Pro, Windows 8 OEM, Windows 8 Enterprise		Mainstream support ended on January 12, 2016. Extended support will end in 2026 (2026)
Windows 8.1	October 17, 2013 (2013-10-17)	Windows 8.1 Pro, Windows 8.1 OEM, Windows 8.1 Enterprise	NT 6.3	Mainstream support ended on January 9, 2018. Extended support until 2023.
Windows Server 2012 R2		Applies for Windows Server 2012 R1		Mainstream support ended on October 9, 2018. Extended support until October 9, 2023 (2023-10-09)