Windows Server 2012 R2 reached its end of life on October 10, 2023, meaning Microsoft no longer provides security updates, bug fixes, technical support, or online content updates for this operating system. After this date, systems running Windows Server 2012 R2 are vulnerable to cyber threats, as no new patches are issued, and traditional antivirus solutions may not fully protect against unpatched vulnerabilities. Organizations can extend support through the Extended Security Updates (ESU) program, which is available until October 13, 2026, but requires annual payments at increasing costs—75% of license cost in the first year, 100% in the second, and 125% in the third. Microsoft’s recommended path is to migrate to newer platforms such as Windows Server 2022 or move workloads to Azure, where free ESUs are available for up to three years after end of support.

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Wiz
threatscape.com › cyber-security-blog › windows-server-2012-is-approaching-end-of-life
Windows Server 2012 R2 End of Life: What Are The Risks?
The Windows Server 2012 and Windows Server 2012 R2 are approaching end of life (EOL), and support will cease for both products on October 10th 2023.
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Enavate
enavate.com › blog › windows-server-2012-r2-end-of-life
What To Do About Windows Server 2012 R2 End of Life
July 26, 2023 - After October 10, 2023, these products will no longer receive critical security updates, bug fixes and technical support. While companies must pay attention to this critical end-of-life message, there’s no reason to panic.
Discussions

Server 2012 R2 reaches the end of its life
Plan your migrations off 2012 R2 as if updates end in September. Then you will be safe. More on reddit.com
🌐 r/sysadmin
89
139
May 17, 2023
Question about Windows Server 2012 R2 End of Support
Hang tight. I should have an answer for you by next Tuesday. More on reddit.com
🌐 r/sysadmin
15
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October 3, 2023
When extended support ends for 2012R2 does that also mean MS Defender will no longer be updated?
You can buy ESU from Microsoft. It’s security only updates for additional 3 years. It’s free on Azure, on prem 75% licensing cost year 1, 100% year 2 and 125% year 3 More on reddit.com
🌐 r/DefenderATP
11
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June 11, 2023
Server 2012 R2 EOL is on Patch Day in October.... but will there be patches on that day?
It's probably a patch to alert you over and over that "Support has ended for this product" More on reddit.com
🌐 r/sysadmin
14
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July 28, 2023
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Microsoft Learn
learn.microsoft.com › en-us › lifecycle › products › windows-server-2012-r2
Windows Server 2012 R2 - Microsoft Lifecycle | Microsoft Learn
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Download Microsoft Edge More info about Internet Explorer and Microsoft Edge ... Windows Server 2012 R2 follows the Fixed Lifecycle Policy.
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Meriplex
meriplex.com › home › windows server 2012 r2 end-of-life transition
Windows Server 2012 R2 End-of-Life Transition
December 16, 2024 - The Windows Server 2012 R2 End of Life deadline is October 10th, 2023 — meaning that Microsoft will no longer provide security updates, bug fixes, or technical support for this product.
Price   $10 - $20
Address   10111 Richmond Ave #500, 77084, Houston
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Microsoft Learn
learn.microsoft.com › en-us › lifecycle › announcements › windows-server-2012-r2-end-of-support
Windows Server 2012 and 2012 R2 reaching end of support - Microsoft Lifecycle | Microsoft Learn
Windows Server 2012 and Windows Server 2012 R2 will end on October 10, 2023. After this date, these products will no longer receive security updates, non-security updates, bug fixes, technical support, or online technical content updates.

server operating system by Microsoft released in 2013

Windows-Server-2012-R2-Update-3-Desktop.png
Windows Server 2012 R2, codenamed "Windows Server Blue", is the tenth major version of the Windows NT operating system produced by Microsoft to be released under the Windows Server brand name. It … Wikipedia
Factsheet
Windows Server 2012 R2 Version of the Windows NT operating system
Developer Microsoft
OS family Windows Server
Factsheet
Windows Server 2012 R2 Version of the Windows NT operating system
Developer Microsoft
OS family Windows Server
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Wikipedia
en.wikipedia.org › wiki › Windows_Server_2012_R2
Windows Server 2012 R2 - Wikipedia
December 9, 2025 - Windows Server 2012 reached the end of mainstream support on October 9, 2018 and entered the extended support phase, which ended on October 10, 2023. Microsoft announced in July 2021 that they will distribute paid Extended Security Updates for ...
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Itsasap
itsasap.com › blog › windows-server-2012-eol
What to Do When Your Windows Server 2012 & 2012 R2 Reaches End of Life
December 21, 2024 - Windows Server 2012 and 2012 R2 will reach End of Life (EOL) on October 10, 2023. That means Microsoft will no longer provide regular security updates, bug fixes, or technical support for this operating system (OS) version.
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End of Life Date
endoflife.date › windows-server
Microsoft Windows Server | endoflife.date
August 10, 2025 - The support lifecycle for each release is 18 months of mainstream support, plus 6 months of extended support. For some releases, customers also have the option to purchase Extended Security Updates (ESU).
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FB Pro
fb-pro.com › home › windows server 2012/r2 – end of support: what you should do now
Windows Server 2012/R2 - End of support: What you should do now - FB Pro GmbH
August 4, 2025 - Microsoft is therefore making an exception and extending the Extended Security Update (ESU) for a further three years. This means that the final end for Windows Server 2012/R2 will not come until 13 October 2026 – provided you take advantage ...
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IceWarp Help Center
support.icewarp.com › hc › en-us › articles › 19244025305745-Microsoft-Windows-Server-2012-EOL-end-of-life-and-what-s-next
Microsoft Windows Server 2012 EOL (end-of-life) and ...
February 12, 2025 - For the migration please follow our migration guide. If you have further questions regarding the migration, do not hesitate to contact our support. ... Windows Server 2012 and Windows Server 2012 R2 will end on October 10, 2023.
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Quest Support
support.quest.com › kb › 4374010 › end-of-support-for-microsoft-windows-server-2012-and-windows-server-2012-r2
End of Support for Microsoft Windows Server 2012 and Windows Server 2012 R2 (4374010)
November 14, 2023 - Microsoft announced that the end of support date for Windows Server 2012 and Windows Server 2012 R2 is October 10, 2023. In order to continue to receive any security updates for Windows Server 2012 and Windows Server 2012 R2, it would be necessary to enroll in the Extended Security Update (ESU) ...
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Morphisec
morphisec.com › home › blog › windows server 2012 end of life –– how do you secure legacy servers?
Windows Server 2012 End of Life – What You Need to Know
April 21, 2025 - Windows Server 2012 and 2012 R2: As of their end-of-life in October 2023, Windows Server 2012 and 2012 R2 had accumulated over 1,000 CVEs.
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HBS -
hbs.net › windows 2012 r2 end of life
Windows 2012 R2 End of Life - HBS
April 22, 2025 - Over a year has passed since Microsoft ended support for Windows Server 2012 and Windows Server 2012 R2 on October 10, 2023.
Address   1700 Stephen St, 54140, Little Chute
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Lansweeper
lansweeper.com › blog › end of life › windows server end of life
Windows Server End of Life - Lansweeper
1 day ago - You can find detailed instructions in their Windows Server Upgrades overview. Windows Server 2012 and Windows Server 2012 R2 will be going end of life on the 10th of October, 2023.
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Lbl
it.lbl.gov › windows-8-1-and-windows-2012-r2-end-of-life
Windows 8.1 and Windows 2012 R2 End-of-Life
April 6, 2023 - After October 10, 2023, Microsoft will end support for Windows Server 2012 R2.
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Dartmouth College
services.dartmouth.edu › TDClient › 1806 › Portal › KB › ArticleDet
Microsoft Windows Server 2012 and 2012 R2 End of Support
Microsoft recently announced it would discontinue support of its Windows Server 2012/2012 R2 operating system as of October 10, 2023. Departments currently using one or more of these server versions should begin planning and strategizing how ...
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NRI North America
nri-na.com › home › modern work › windows server 2012 end-of-life risks, options, and next steps
Windows Server 2012 End-of-life Risks, Options & Next Steps
August 19, 2024 - In October 2023, Windows Server 2012/2012 R2 will reach the end of extended support – leaving your infrastructure and applications at risk.