Windows Server 2012 R2
Version of the Windows NT operating system
Screenshot of Windows Server 2012 R2, showing the Server Manager application which is automatically opened when an administrator logs on, start button, taskbar, and the blue color of Aero Lite
DeveloperMicrosoft
OS familyWindows Server
Working stateCurrent
Source modelClosed source / Shared source
Released to
manufacturing
August 27, 2013; 10 years ago (2013-08-27)[1]
General
availability
October 17, 2013; 10 years ago (2013-10-17)[2]
Latest release6.3 (Build 9600) / October 11, 2022; 20 months ago (2022-10-11)[3]
Marketing targetBusiness
Update methodWindows Update, Windows Server Update Services, SCCM
Platformsx86-64
Kernel typeHybrid (Windows NT kernel)
Default
user interface
Windows shell (GUI)
LicenseTrialware
Preceded byWindows Server 2012 (2012)
Succeeded byWindows Server 2016 (2016)
Official websiteWindows Server 2012 R2 (archived at Wayback Machine)
Support status
  • Start date: October 17, 2013
  • Mainstream support ended on October 9, 2018
  • Extended support ended on October 10, 2023[4]
  • Paid support via the Extended Security Updates program until October 13, 2026, only for volume licensed editions.

Windows Server 2012 R2, codenamed "Windows Server Blue", is the tenth version of the Windows Server operating system by Microsoft, as part of the Windows NT family of operating systems. It was unveiled on June 3, 2013, at TechEd North America,[5] and released on October 18 of the same year.[2] It is the successor to Windows Server 2012, and is based on the Windows 8.1 codebase. Windows Server 2012 R2 is the final version of Windows Server to use the "R2" suffix, which had been used since the release of Windows Server 2003 R2 in 2005.[6]

Windows Server 2012 R2 removed support for processors without CMPXCHG16b, PrefetchW, LAHF and SAHF.

A further update, formally designated Windows Server 2012 R2 Update, was released in April 2014.[7] It is a cumulative set of security, critical and other updates.[8] Windows Server 2012 R2, like previous versions of Windows Server before it and versions after it, is only compatible with 64-bit processors.

Windows Server 2012 R2 was succeeded by Windows Server 2016, which is derived from the Windows 10 codebase. Mainstream support for Windows Server 2012 R2 ended on October 9, 2018, and extended support ended on October 10, 2023. Windows Server 2012 R2 is eligible for the paid Extended Security Updates (ESU) program, which offers continued security updates until October 13, 2026.

Features

Windows Server 2012 R2 Start Screen, including Internet Explorer 11 and essential tools for use in a server.

The following features are introduced in Windows Server 2012 R2:

Editions

According to the Windows Server 2012 R2 datasheet published on May 31, 2013, there are four editions of this operating system: Foundation, Essentials, Standard and Datacenter.[22] As with Windows Server 2012, the Datacenter and Standard editions are feature-identical, varying only based on licensing (particularly licensing of virtual instances). The Essentials edition has the same features as the Datacenter and Standard products, with some restrictions.[23]

Support lifecycle

Microsoft originally planned to end mainstream support for Windows Server 2012 and Windows Server 2012 R2 on January 9, 2018, with extended support ending on January 10, 2023. In order to provide customers the standard transition lifecycle timeline, Microsoft extended Windows Server 2012 and 2012 R2 support in March 2017 by 9 months. 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.[24][25][26]

Microsoft announced in July 2021 that they will distribute paid Extended Security Updates for volume licensed editions of Windows Server 2012 and Windows Server 2012 R2 for up to 3 years after the end of extended support.[27] For Windows Server 2012 and Windows Server 2012 R2, these updates will last until October 13, 2026. This will mark the final end of all security updates for the Windows NT 6.2 product line after 14 years, 2 months and 12 days and will also mark the final end of all security updates for the Windows NT 6.3 product line after 13 years, 1 month and 16 days.

See also

References

  1. ^ Anderson, Brad (27 August 2013). "Today is the RTM for Windows Server 2012 R2!". Enterprise Mobility and Security Blog. Microsoft.
  2. ^ a b Jeff Meisner (August 14, 2013). "Save the date: Windows Server 2012 R2, Windows System Center 2012 R2 and Windows Intune update coming Oct. 18 - The Official Microsoft Blog - Site Home - TechNet Blogs". TechNet Blogs. Retrieved February 10, 2014.
  3. ^ "October 11, 2022—KB5018474 (Monthly Rollup)". support.microsoft.com. October 11, 2022.
  4. ^ "Search product lifecycle – Windows Server 2012 R2". Microsoft.com. Retrieved December 27, 2018.
  5. ^ Damien Caro (June 10, 2013). "Windows Server 2012 R2–First look - Damien Caro's Blog - Site Home - TechNet Blogs". Blogs.technet.com. Retrieved June 25, 2013.
  6. ^ https://www.solarwinds.com/resources/it-glossary/windows-server
  7. ^ "August updates for Windows 8.1 and Windows Server 2012 R2 - Windows Experience BlogWindows Experience Blog". blogs.windows.com.
  8. ^ "Windows Server 2012 R2 Update (KB2919355)". Microsoft Download Center.
  9. ^ a b Jackson, Joab (June 5, 2013). "Windows Server 2012 R2 bulks up on storage and networking". PC World. IDG. Retrieved September 20, 2013.
  10. ^ Sams, Brad (June 25, 2013). "Windows 8.1 Start button revealed in Windows Server 2012 R2". Neowin.net. Neowin LLC. Retrieved September 20, 2013.
  11. ^ Tulloch, Mitch (2013). Introducing Windows Server 2012 R2 (PDF) (Preview Release ed.). Redmond, Washington: Microsoft Press. ISBN 978-0-7356-8293-1. Retrieved September 19, 2013.
  12. ^ "What's New in IIS 8.5?". Microsoft. 14 May 2020.
  13. ^ "What's New for SMB in Windows Server 2012 R2". 31 August 2016.
  14. ^ "What's New for Windows Deployment Services in Windows Server 2012 R2". 31 August 2016.
  15. ^ "What's Changed in Security Technologies in Windows 8.1". 25 June 2014.
  16. ^ "What's New in IPAM in Windows Server 2012 R2". 31 August 2016.
  17. ^ "What's New in Group Policy in Windows Server 2012 R2". Microsoft. 31 August 2016.
  18. ^ "What's new in Group Policy in Windows Server 2012 R2". Group Policy Central. 25 June 2013.
  19. ^ Fabritius, David (3 September 2013). "Understanding Licensing for Windows Server 2012 R2 Essentials and the Windows Server Essentials Experience role". The Windows Server Essentials and Small Business Server Blog.
  20. ^ "Windows Server 2012 R2 Products and Editions Comparison". Download Center. Microsoft. 7 February 2014. Retrieved 30 June 2016.
  21. ^ "Resilient File System Overview". TechNet Library. Microsoft. 29 February 2012. Retrieved 25 December 2013.
  22. ^ "Cloud Optimize Your Business" (PDF). Microsoft. Retrieved August 2, 2013.
  23. ^ Mackie, Kurt (June 20, 2013). "Microsoft Enhancing Windows Server 2012 R2 Essentials for SMBs". Redmondmag.com. Retrieved June 25, 2013.
  24. ^ "Windows Server 2012". Microsoft Docs. Archived from the original on July 28, 2021. Retrieved July 28, 2021.
  25. ^ "Microsoft Extends Windows Server 2012 Support -- Redmondmag.com". Redmondmag. Archived from the original on July 28, 2021. Retrieved July 28, 2021.
  26. ^ "Windows Server 2012 Nears End of life". February 3, 2020. Archived from the original on January 26, 2021. Retrieved July 28, 2021.
  27. ^ "Product Lifecycle FAQ - Extended Security Updates". docs.microsoft.com. Archived from the original on July 29, 2021. Retrieved July 28, 2021.

Further reading