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

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.

• 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.

• 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.

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

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

• 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

Product type: Software

Application category: Utilities

Platform: Windows

Variant: 24H2

Version: OS Builds 26200.8655 and 26100.8655

Vendor release date: Jun 9, 2026

Original release notes: View on vendor site

Published on updatealert.io: Jun 10, 2026

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