Microsoft has unveiled its hotpatch update system for Windows 11 Enterprise builds, marking a significant advancement in the updating process for Enterprise 11 versions 24H2. This new protocol is designed specifically for devices powered by AMD and Intel x64 processors, and while it has been discussed previously, this release makes it widely accessible for the first time.
Key Features of Hotpatching
The hotpatching system allows updates to be applied without necessitating a system restart. This feature is particularly advantageous for corporate environments, enabling employees to maintain productivity without the disruptions typically associated with rebooting. Additionally, this method minimizes excessive CPU usage, enhancing overall system performance during updates.
While quarterly updates will still require a reboot, the new hotpatching capability represents a notable shift from the monthly reboot requirements that have been standard practice. The rollout follows several months of refinement since its preview in November 2023, where initial glimpses of the protocol were shared in Windows 11 Enterprise 24H2 and Microsoft 365 Preview builds.
Requirements for Hotpatching
For organizations looking to enable hotpatching on their Windows 11 Enterprise clients, Microsoft has outlined specific requirements:
- A subscription to Windows 365 Enterprise, Windows 11 Enterprise (including E3, E5, or F3), or Windows 11 Education (A3 or A5 will suffice).
- A client running Windows 11 Enterprise 24H2, specifically build 26100.2033 or higher, with the latest baseline update.
- Activation of Visualization-based Security (VBS).
- An AMD or Intel x64 processor.
For Arm64 devices, the hotpatch update system is currently in public preview and requires a registry key modification to function properly. Detailed instructions for this adjustment can be found in the official blog post.
Update Schedule and Compatibility
Microsoft has confirmed that hotpatch updates will align with the standard update schedule, which remains applicable to both Windows 10 and Windows 11 23H2 devices. Each hotpatch release will have a distinct KB number, and the Windows quality update policy will automatically assess whether a device meets the necessary criteria for enrollment in the hotpatch system.
It is crucial to note that this feature is exclusively available for Windows 11 Enterprise clients and will not extend to Windows 11 Home or Pro machines. For further details on the hotpatch system and its implementation, interested parties can refer to the official Microsoft blog.
