Microsoft Windows 11 25H2 Update Version OS Build 26200.9711

KB5127648 updates Windows 11 version 25H2 to OS build 26200.9711 with security hardening, Secure Boot certificate deployment, reliability fixes, a new Manitoba time zone, and updated AI components.

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Product Information

Vendor: Microsoft

Product: Windows 11

Product type: Software

Application category: Utilities

Platform: Windows

Variant: 25H2

Version: OS Build 26200.9711

Vendor information published: Oct 13, 2026

Original release notes: View on vendor site

Published on updatealert.io: Oct 14, 2026

Description: Client operating system for modern desktop and enterprise environments.