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AI enhanced content

Update Summary

KB5121003 updates Windows 11 25H2 with security improvements and expanded Secure Boot certificate deployment coverage. It also includes servicing stack update KB5123304 and AI component updates. Reference IDs: KB5101684, KB5121767, KB5101650.

Update Details

Security

  • Provides security improvements for Windows 11.
  • Includes additional high-confidence device targeting data to expand deployment of new Secure Boot certificates.

Bug Fixes

  • Includes improvements from KB5101684, KB5121767, and KB5101650.
  • Updates the servicing stack with KB5123304 to improve the reliability of the Windows Update installation process.

Hints

  • If previous updates are already installed, only the new updates in this package will be downloaded and installed.
  • AI components are updated to version 1.2605.856.0 for Image Search, Content Extraction, Semantic Analysis, and Settings Model.
  • Windows 11, version 24H2 Home and Pro editions reach end of updates on October 13, 2026.

Product Information

Vendor: Microsoft

Product: Windows 11

Product type: Software

Application category: Utilities

Platform: Windows

Variant: 25H2

Version: OS Builds 26200.9168 and 26100.9168

Vendor release date: Aug 11, 2026

Original release notes: View on vendor site

Published on updatealert.io: Aug 12, 2026

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