Microsoft Windows 11 24H2 Update Version OS Builds 26200.8655 and 26100.8655

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Update Summary

KB5094126 updates Windows 11 version 25H2 and 24H2 to OS Builds 26200.8655 and 26100.8655. It includes June 2026 security fixes, Secure Boot certificate rollout improvements, and a virtualization-related stop error fix. Reference IDs: KB5089549, KB5089573.

Update Details

Security

  • Includes the latest security fixes from the June 2026 Security Updates guide.
  • Improves Secure Boot certificate delivery by adding higher-confidence device targeting data for phased rollout.
  • Addresses security vulnerabilities documented in the June 2026 Security Updates guide.

Bug Fixes

  • Fixed stop errors HYPERVISOR_ERROR (0x20001) and KMODE_EXCEPTION_NOT_HANDLED (0x1E) that could occur after KB5089573 during restarts, virtual machine operations, or some gaming applications.

New Features

  • Updates AI components: Image Search, Content Extraction, Semantic Analysis, and Settings Model to version 1.2605.856.0.

Known Issues

  • Microsoft is not currently aware of any issues with this update.

Hints

  • Windows 11 version 24H2 Home and Pro editions reach end of updates on 2026-10-13; Enterprise and Education remain supported until 2027-10-12.
  • Secure Boot certificates for most Windows devices begin expiring in June 2026; updated certificates are delivered through Windows Update over time.
  • If previous updates are already installed, only the new updates in this package will be downloaded and installed.
Product Information

Vendor: Microsoft

Product: Windows 11

Version: OS Builds 26200.8655 and 26100.8655

Release date: Jun 9, 2026

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