KB5074109

January 13, 2026—KB5074109 (OS Builds 26200.7623 and 26100.7623)

Applies To

Windows 11 version 25H2, all editionsWindows 11 version 24H2, all editions

Release Date:

1/13/2026

Version:

OS Builds 26200.7623 and 26100.7623

This cumulative update for Windows 11, version 25H2 and 24H2 (KB5074109), 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 25H2 and 24H2.

Announcements and messages

This section provides key notifications related to this release, including announcements, change logs, and end-of-support notices.

KB identifier changes for Windows Server do not affect Windows 11 starting January 2026

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