May 12, 2026—KB5087420 (OS Build 22631.7079)
Applies To
Windows 11 version 23H2, all editions
Release Date:
5/12/2026
Version:
OS Build 22631.7079
This cumulative update for Windows 11, version 23H2 (KB5087420), includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. To learn more about differences between security updates, optional non-security preview updates, out-of-band (OOB) updates, and continuous innovation, see Windows monthly updates explained. For information on Windows update terminology, see the different types of Windows software updates.
To view the latest updates about this release, visit the Windows release health dashboard or the update history page for Windows 11, version 23H2.
| | | --- | | Tip: This month’s video is available in the Windows 11, version 25H2 and 24H2 article. |
This section provides key notifications related to this release, including announcements, change logs, and end-of-support notices.
Windows Secure Boot certificate expiration
Important: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. This might affect the ability of certain personal and business devices to boot securely if not updated in time. To avoid disruption, we recommend reviewing the guidance and taking action to update certificates in advance. For...
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