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Windows Server 2008 R2 is the final version of Windows Server that includes Enterprise and Web Server editions, the final that got a service pack from Microsoft and the final version that supports IA-64 and processors without PAE, SSE2 and NX (although a 2018 update dropped support for non-SSE2 processors).

It is built on the same kernel used with the client-oriented Windows 7, and is the first server operating system released by Microsoft not to support 32-bit processors, a move which was followed by the consumer-oriented Windows 11 in 2021. It is the successor to Windows Server 2008, which is derived from the Windows Vista codebase, released the previous year, and was succeeded by the Windows 8-based Windows Server 2012.Įnhancements in Windows Server 2008 R2 include new functionality for Active Directory, new virtualization and management features, version 7.5 of the Internet Information Services web server and support for up to 256 logical processors. It was released to manufacturing on July 22, 2009, and became generally available on October 22, 2009, shortly after the completion of Windows 7. Windows Server 2008 R2, codenamed "Windows Server 7", is the fifth version of the Windows Server operating system produced by Microsoft and released as part of the Windows NT family of operating systems. Installing Service Pack 1 is required for users to receive updates and support after April 9, 2013. The program is included with Microsoft Azure purchases, and offers Azure customers an additional year of support, until January 9, 2024. This program allowed volume license customers to purchase, in yearly installments, security updates for the operating system until January 10, 2023, only for Standard, Enterprise and Datacenter volume licensed editions. Windows Server 2008 R2 is eligible for the paid ESU (Extended Security Updates) program. Mainstream support ended on January 13, 2015.

com /en-us /previous-versions /windows /it-pro /windows-server-2008-R /dd349801(v=ws. Windows Update, Windows Server Update Services, SCCMĬommercial software ( Retail, volume licensing, Microsoft Software Assurance)ĭocs. Service Pack 1 with security update rollup (.24499) / March 19, 2019 4 years ago ( )