Version of the Windows NT operating system | |
Developer | Microsoft |
---|---|
OS family | Windows Server |
Working state | Current |
Source model | Closed source / Shared source |
Released to manufacturing | August 27, 2013[1] |
General availability | October 17, 2013[2] |
Latest release | 6.3 (Build 9600) / October 11, 2022[3] |
Marketing target | Business |
Update method | Windows Update, Windows Server Update Services, SCCM |
Platforms | x86-64 |
Kernel type | Hybrid (Windows NT kernel) |
Default user interface | Windows shell (GUI) |
License | Trialware |
Preceded by | Windows Server 2012 (2012) |
Succeeded by | Windows Server 2016 (2016) |
Official website | Windows Server 2012 R2 (archived at Wayback Machine) |
Support status | |
|
Windows Server 2012 R2, codenamed "Windows Server Blue", is the eleventh major version of the Windows NT operating system produced by Microsoft to be released under the Windows Server brand name. 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.