Microsoft has made a significant decision regarding the future of Windows Server 2022 hotpatching, extending its availability until 2027. This extension comes as a response to the needs of users who rely on the technology, particularly for the Windows Server 2022 Datacenter: Azure Edition. The official confirmation was shared on Microsoft’s Windows Release Health dashboard, indicating that while mainstream support for Windows Server 2022 will conclude on October 13, 2026, extended support will continue until October 14, 2031.
Hotpatching is a valuable feature for Windows Server administrators, allowing them to apply security updates without the need for scheduled server downtime. Although a cumulative update requiring a reboot will still occur quarterly, the monthly reboots that typically accompany Microsoft’s updates can be avoided. This innovation is particularly beneficial in maintaining operational continuity and minimizing disruptions.
Microsoft explains that hotpatching operates by modifying the in-memory code of a running process, eliminating the need for a restart. While Linux administrators might reference tools like Ksplice, which can apply patches to a running kernel without rebooting, any method that shortens the time between identifying a vulnerability and implementing a patch is advantageous.
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While Microsoft encourages administrators to transition to Windows Server 2025, the latest Long Term Servicing Channel (LTSC) release, the extension of hotpatching provides Azure Edition users with a temporary reprieve from the monthly reboot cycle until 2027. It is important to note that this extension is exclusive to Windows Server 2022 Datacenter: Azure Edition, leaving on-premises users of Windows Server 2022 without similar support. This move aligns with Microsoft’s ongoing strategy to promote Azure as a preferred platform for its users.
Additionally, hotpatch updates have recently been introduced for Windows 11 24H2 Enterprise clients, currently in public preview for 2024, and are now the default for Windows Autopatch.® This shift reflects Microsoft’s commitment to enhancing user experience and security across its platforms.
