device readiness

Security updates are crucial for system integrity, but traditionally require a reboot, causing productivity interruptions. Microsoft has introduced Windows Hotpatch, which allows critical updates to be applied without rebooting, enhancing compliance and user satisfaction. Hotpatch modifies in-memory code while the system is operational, leading to immediate updates without downtime. It is designed for efficiency with small payloads that minimize performance impact. Hotpatch updates undergo the same validation as standard updates and can address zero-day vulnerabilities without requiring a reboot. This technology is available for Windows 11 version 24H2 or later, Windows 365, Azure Virtual Desktop, and Windows Server 2022/2025 Azure Edition, with appropriate licensing. Hotpatch has evolved from internal server capabilities to support client machines and integrates with Autopatch, automating the update process for enterprise environments. Microsoft Digital plans to scale Hotpatch to 450,000 devices within four months, achieving high compliance rates quickly—81% within 24 hours and 90% within five days, compared to previous timelines of up to nine months. Since its general availability in April, Hotpatch has been deployed to over 4 million devices globally, enhancing user experience by making updates seamless and unobtrusive. Plans for further expansion and improvements in compliance visibility and reporting are underway.