Microsoft Windows 11 26H2 Update Version OS Build 26300.9818

KB5127936 preview for Windows 11 version 26H2 delivers new File Explorer, recovery, accessibility, networking, and management features, plus fixes for Remote Desktop, VPN, audio, Sandbox, BitLocker, and WSL.

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Product Information

Vendor: Microsoft

Product: Windows 11

Product type: Software

Application category: Utilities

Platform: Windows

Variant: 26H2

Version: OS Build 26300.9818

Vendor information published: Oct 28, 2026

Original release notes: View on vendor site

Published on updatealert.io: Oct 30, 2026

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