- January 17, 2026—KB5077744 (OS Builds 26200. 7627 and 26100. 7627) Out-of . . .
This out-of-band update for Windows 11, version 25H2 and 24H2 (KB5077744) is cumulative It includes updates from previous security and non-security releases, along with an additional fix 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
- Download and Install Windows Update from Microsoft Update Catalog
To apply this update to a suitable PC -- that is, a PC running one of the covered processors -- individuals must visit the Microsoft Update Catalog Then, they must locate the KB4090007 update, choose the version that's right for their Windows installation, download, and then install it
- October 14, 2025—KB5066835 (OS Builds 26200. 6899 and 26100. 6899)
Windows 11 servicing stack update (KB5067360)- 26100 6893 This update makes quality improvements to the servicing stack, which is the component that installs Windows updates Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates
- March 10, 2026—KB5079473 (OS Builds 26200. 8037 and 26100. 8037)
This cumulative update for Windows 11, version 25H2 and 24H2 (KB5079473), 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
- February 10, 2026—KB5075899 (OS Build 26100. 32370) - Microsoft Support
For more information about security vulnerabilities, see the Security Update Guide and the February 2026 Security Updates Windows Server 2025 servicing stack update (KB5075898) - 26100 32370 This update makes quality improvements to the servicing stack, which is the component that installs Windows updates
- January 13, 2026—KB5073724 (OS Builds 19045. 6809 and 19044. 6809)
This security update includes fixes and quality improvements that are part of the following updates: December 9, 2025—KB5071546 (OS Builds 19045 6691 and 19044 6691) December 18, 2025—KB5074976 (OS Builds 19044 6693 and 19045 6693) Out-of-band The following is a summary of the issues that this update addresses when you install this update If there are new features, it lists them as well
- February 10, 2026—KB5075912 (OS Builds 19045. 6937 and 19044. 6937 . . .
Windows 10 servicing stack update (KB5077456) - versions 19045 6935 and 19044 6935 Microsoft now combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU)
- December 9, 2025—KB5072033 (OS Builds 26200. 7462 and 26100. 7462 . . .
This cumulative update for Windows 11, version 25H2 and 24H2 (KB5072033), 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
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