Hot patch-enabled devices will restart after installing the June 2026 Windows update

The June 2026 Windows security update will be a hotpatch baseline update requiring a device restart on hotpatch-enabled devices. This one-time restart maintains the foundation for future restart-free hotpatches, with the next expected in August 2026. Non-hotpatch devices are unaffected. What and Why The June 2026 Windows security update will be released as a hotpatch baseline update rather than a standard hotpatch update. This baseline refresh is required periodically to maintain the trusted foundation that enables future hotpatch updates to install without requiring device restarts. Rollout Schedule This change applies to the June 2026 Windows security update. Impact on Your Organization Who is affected: Organizations with Windows devices enrolled in hotpatch updates Platforms / Services: Windows Windows Update Hotpatch-enabled devices What will happen: Hotpatch-enabled devices will receive the June 2026 security update through the standard Windows Update servicing process. A device restart will be required to complete installation. After installation and restart, the update will appear in update history and compliance reporting as usual. Devices remain enrolled in hotpatch, and the next restart-free hotpatch update is expected in August 2026. Devices not enrolled in hotpatch and devices using standard Windows updates are not affected. Action Required / Recommendations Ensure update deployment policies remain in place. Plan for and communicate the one-time restart requirement. No additional configuration changes are required. Additional information Hotpatch updates overview Compliance considerations No compliance considerations identified, review as appropriate for your organization. Message ID: MC1323247

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