Microsoft has officially extended the support for hotpatches on Windows Server 2022 by one additional year. Eligible systems will now benefit from security updates without necessitating a system restart.
The announcement specifies that Microsoft has stretched the support for the hotpatch feature of Windows Server 2022 until October 2027. This move pushes the end date for this particular update method one year beyond the regular mainstream support termination, which is scheduled for October 2026. It’s important to note that this extension is contingent upon specific conditions: it is only available to instances running the Windows Server 2022 Datacenter: Azure Edition that are registered for hotpatch updates. Other variants of Windows Server 2022, including Datacenter, Essentials, and Standard, will retain their regular extended support end date of October 14, 2031.
Understanding Security Updates Without System Reboots
The hotpatching method enables security updates to be applied directly into the memory of running processes. Crucially, a system reboot or a restart of affected services is not required after these updates are installed. This approach is designed to minimize downtime and accelerate the response time to newly discovered vulnerabilities. Microsoft highlighted the distinguishing advantages of hotpatching:
“Hotpatching is designed to provide protection against security threats without requiring a device restart. By applying updates directly to running processes, hotpatching helps maintain uptime, reduces service interruptions, and shortens the time needed to respond to vulnerabilities. This extension allows businesses to benefit from these features for another year while maintaining the same update experience.”
— Microsoft
However, it is essential to remember that system restarts will still be necessary when installing non-security-related Windows updates or patches for third-party software, such as the .NET Framework, through the standard update channels.
Evolution of Hotpatch Technology at Microsoft
The hotpatch functionality was initially introduced by Microsoft in February 2022 for virtual machines running under Windows Server Azure Edition. Since its launch, the company has steadily expanded the availability of this technology. Testing began for Windows Server 2025 in September 2024, followed by testing phases for Windows 11 version 24H2 and Windows 365 in November 2024. As of April 2025, the feature became generally available for enterprise customers using Windows 11 Enterprise 24H2 on x64 systems. Following the security update in May 2026, Microsoft has enabled this option by default for all qualifying Windows devices that are managed through the Microsoft Graph API and Microsoft Intune.
The ongoing development and enhancement of hotpatching reflect Microsoft’s commitment to providing cutting-edge solutions aimed at improving system resilience and security. Organizations stand to gain significantly from this extended support, allowing them to better manage their Windows Server environments with minimal disruption.
