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Microsoft Windows 11 24H2 Update Version OS Builds 26200.8037 and 26100.8037

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Update Summary

KB5079473 updates Windows 11 25H2 and 24H2 to OS Builds 26200.8037 and 26100.8037 with the latest security fixes plus non-security improvements from KB5077181. It also includes a servicing stack update, Secure Boot certificate rollout changes, and a fix for WDAC COM object allowlisting. Reference IDs: KB5083532, KB5085516.

Update Details

Security

  • Includes the latest security fixes for Windows 11 25H2 and 24H2.
  • Secure Boot: adds higher-confidence device targeting data to expand controlled rollout of new Secure Boot certificates.
  • Windows Defender Application Control (WDAC): fixes COM object allowlisting behavior when endpoint security policy is stricter than the allowlisting policy.

Bug Fixes

  • File Explorer search reliability improved when searching across multiple drives or This PC.
  • Windows System Image Manager: improves trusted catalog file selection and adds a warning dialog to confirm trusted sources.
  • Servicing stack update KB5083532 improves update installation reliability.

Known Issues

  • Signing in with a Microsoft account might fail for Microsoft Teams Free and other apps; Microsoft Entra ID sign-ins are not affected.
  • Affected Microsoft account sign-ins may also impact Microsoft Edge, Excel, Word, and Microsoft 365 Copilot when Microsoft account authentication is required.

Hints

  • If previous updates are already installed, only the new updates in this package will be downloaded and installed.
  • The Microsoft account sign-in issue is addressed in KB5085516.
  • Windows Secure Boot certificates used by most devices are set to expire starting in June 2026; Microsoft recommends reviewing the certificate update guidance in advance.

Product Information

Vendor: Microsoft

Product: Windows 11

Product type: Software

Application category: Utilities

Platform: Windows

Variant: 24H2

Version: OS Builds 26200.8037 and 26100.8037

Vendor information published: Mar 10, 2026

Original release notes: View on vendor site

Published on updatealert.io: Jun 4, 2026

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

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