View source for OS-EOL

=Quick EOL List=
These OS versions are already past their End of Life. If you have a system running on one of these we recommend backing up your data and upgrading as soon as possible. If these systems are connected to the internet, they can be blocked from the internet by ITSO.
{| class="wikitable"
|-
!OS Version 
!End of Life Date
|-
|Windows 10 (2004)
|December 14, 2021
|-
|Windows 10 (1909)
|May 10, 2022
|-
|Windows 7
|January 14, 2020
|-
|Windows Server 2008
|January 14, 2020
|-
|MacOS - Mojave
|October 31, 2021
|-
|Centos 6
|November 30, 2020
|-
|Ubuntu 14.04
|April 2019
|}

=Windows=
With the introduction of Windows 11, Microsoft revised their product lifecycle. There will be a single yearly release for both windows 10 and 11 going forward. Each Windows 10 release will be good for 30 months, and each Windows 11 Release will be good for 36 months. Windows 10 will go final end of life on October 14, 2025. 

{| class="wikitable"
|-
!Version
!Release Date
!Service Term
!End of Life
|-
|Windows 11 (21H2)
|10/2021
|36 Months
|10/2024
|-
|Windows 10 (21H2)
|11/16/2021
|30 Months
|6/11/2024
|-
|Windows 10 (21H1)
|5/18/2021
|18 Months
|12/13/2022
|-
|Windows 10 (20H2)
|10/20/2020
|30 Months
|5/9/2023
|-
|Windows 10 (2004)
|5/27/2020
|18 Months
|12/14/2021
|-
|Windows 10 (1909)
|11/12/2019
|30 Months
|5/10/2022
|-
|Windows 10 (1903)
|5/21/2019
|18 Months
|'''12/8/2020'''
|-
|Windows 10 (1809)
|11/13/2018
|30 Months
|'''5/11/2021'''
|-
|Windows 8.1
|8/27/2013
|9 Years, 4 Months
|1/10/2023
|}

=Windows Server=
{| class="wikitable"
|-
!Version
!Release Date
!Service Term
!End of Life
|-
|Server 2019
|11/13/2018
|10 Years
|1/9/2029
|-
|Server 2016
|10/15/2016
|10 years
|1/11/2027
|-
|Server 2012 R2
|10/17/2013
|10 Years
|10/10/2023
|-
|Server 2012
|10/30/2012
|11 Years
|10/10/2023
|}

=MacOS=
MacOS follows a sliding window of support, the latest version has full support and the previous two versions receive security update. When a new version is released security support is dropped for the version which is now 3 years old. 
{| class="wikitable"
|-
!Version
!Release Date
!Service Term
!End of Life
|-
|MacOS - Monterey
|October 25, 2021
|3 Years
|Q4 2023
|-
|MacOS - Big Sur
|November 12, 2020
|3 Years
|Q4 2023
|-
|MacOS - Catalina
|October 7, 2019
|3 Years
|Q4 2022
|}

=Linux - Centos=
{| class="wikitable"
|-
!Version
!Release Date
!Service Term
!End of Life
|-
|Centos Stream 9
|September 15, 2021
|5 years
|May 31, 2027
|-
|Centos Stream 8
|September 24, 2019
|5 years
|May 31, 2024
|-
|Centos Linux 8
|September 24, 2019
|2 years
|December 31, 2021
|-
|Centos Linux 7
|July 7, 2014
|10 Years
|June 30, 2024
|-
|Centos Linux 6
|October 7, 2011
|9 years
|'''November 30, 2020'''
|}

=Linux - Ubuntu=
{| class="wikitable"
|-
!Version
!Release Date
!Service Term
!End of Life
|-
|20.04 LTS
|April 23, 2020
|5 Years
|April 2025
|-
|18.04 LTS
|April 26, 2018
|5 Years
|April 2023
|-
|16.04 LTS
|April 21, 2016
|5 Years
|April 2021
|}