"Hotpatch update support for Windows Server 2022 Datacenter: Azure Edition has been extended through October 2027. Devices enrolled in Hotpatch updates will continue to receive monthly security updates without requiring a restart," Microsoft said in a Windows release health dashboard update.
Microsoft extends hotpatching support to October 2027
Microsoft has extended hotpatching for Windows Server 2022 by one year, through October 2027, the company announced in a Windows release health dashboard update and a Monday message center update. The extension is effective immediately and preserves the existing hotpatch cadence through October 2027. Microsoft framed the change as allowing organizations to "continue benefiting from these capabilities for an additional year while maintaining the same update experience."
Hotpatching mechanics: in-memory updates without restarts — and the limits
On systems where hotpatching is enabled, Microsoft deploys security updates by patching the in-memory code of running processes so the device does not need to restart after each installation. "Hotpatching is designed to deliver protections against security threats without requiring a device restart. By applying updates directly to running processes, hotpatching helps maintain uptime, reduces servicing disruptions, and shortens the time it takes to respond to vulnerabilities," Microsoft said.
That capability has clear limits: servers still require a restart after installing updates delivered through the regular (non-Hotpatch) Windows update channel. Microsoft gives two explicit examples of updates that cannot be applied without a restart: Windows non-security updates and non-Windows updates such as .NET patches.
Who is eligible: Windows Server 2022 Datacenter: Azure Edition only
The extension applies only to systems running Windows Server 2022 Datacenter: Azure Edition that are enrolled in Hotpatch updates. Microsoft made hotpatching available for that edition in February 2022, when it announced general availability for Windows Server Azure Edition core virtual machines.
Separately, Microsoft notes broader lifecycle dates for Windows Server 2022: the Datacenter, Datacenter: Azure Edition, Essentials, and Standard editions of Windows Server 2022 will reach the extended end date on October 14, 2031.
Related hotpatch rollouts: previews and general availability across Windows platforms
Microsoft's hotpatch program has expanded beyond Server 2022 Datacenter: Azure Edition. The company began testing hotpatching in public preview for Windows Server 2025 in September 2024 and for Windows 11 24H2 and Windows 365 in November 2024. Hotpatch updates became generally available for business customers using Windows 11 Enterprise 24H2 on x64 (AMD/Intel) systems starting in April 2025.
Microsoft also announced that it will enable hotpatch security updates by default for all eligible Windows devices managed through the Microsoft Graph API and Microsoft Intune starting with the May 2026 Windows security update.
What this means for technologists, procurement leaders, and adversaries
- Technologists and security teams: Systems enrolled in Hotpatch updates will keep receiving monthly security updates without restarts through October 2027, but teams must confirm devices are running Windows Server 2022 Datacenter: Azure Edition and are enrolled in Hotpatch to qualify; non-Hotpatch channels still require restarts for many update types.
- Affected enterprises and procurement leaders: The extension preserves an uptime-friendly update path for eligible Azure Edition deployments for an extra year, while the broader Server 2022 editions retain an extended end date of October 14, 2031; procurement decisions that hinge on restart-minimizing updates should account for the edition and enrollment requirements.
- Adversaries and threat actors: Organizations that remain unenrolled in Hotpatch or that rely on the regular update channel will still experience restart-driven maintenance windows for non-security and third-party updates, a constraint defenders should monitor when scheduling patching and hardening efforts.
Microsoft's decision keeps a restart-free security patch path open for eligible Azure Edition servers through October 2027 while leaving the standard update model and its restart requirements unchanged. For IT teams that prioritize continuous uptime, the key facts are narrow and concrete: the extension is immediate, it applies only to Windows Server 2022 Datacenter: Azure Edition devices that are enrolled in Hotpatch, and non-Hotpatch updates — including Windows non-security updates and .NET patches — will still require restarts.
