What and why
The June 2026 Windows security update will be released as a standard update instead of a hotpatch update. As a result, hotpatch-enabled devices will require a restart to complete installation.
This change prioritizes security following public disclosure of a vulnerability outside coordinated disclosure best practices (CVE-2026-45585).
Rollout schedule
- June 2026: Standard update with restart required for hotpatch-enabled devices.
- July 2026: Planned baseline update month with restart required.
- August 2026: Next hotpatch update expected.
Impact on your organization
- Hotpatch-enabled devices will require a restart to complete installation of the June 2026 security update.
- Hotpatch-enabled devices will remain enrolled in hotpatch updates.
- No change for devices not using hotpatch updates (standard updates already require restart).
Action required / recommendations
No additional configuration is required to stay enrolled in hotpatch updates.
Compliance considerations
No compliance action is required. Update installation and restart behavior will be reflected in update history and compliance reports as usual.
Additional information
You can track the hotpatch update calendars on the Windows release health site for both Windows 11 and Windows Servers.