Microsoft Windows 11 25H2 Update Version OS Builds 26200.8117 and 26100.8117

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Update Summary

KB5086672 updates Windows 11 25H2 and 24H2 to OS Builds 26200.8117 and 26100.8117. It fixes a March 2026 preview update installation error (0x80073712) and includes prior quality improvements plus servicing stack updates. Reference IDs: KB5079391, KB5079473, KB5085516, KB5079387.

Update Details

Bug Fixes

  • Fixed an installation issue affecting some devices installing the March 2026 preview update KB5079391, including error 0x80073712.
  • Includes cumulative quality improvements from KB5079473, KB5085516, and KB5079391.

Known Issues

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

Hints

  • Offered through Windows Update only to devices that already installed KB5079473 or a later update.
  • Also available for manual download from the Microsoft Update Catalog.
  • IT administrators using Microsoft Intune or Windows Autopatch should follow Microsoft guidance for expedited deployment.
  • Includes a Windows 11 servicing stack update: KB5079387 (26100.8112).
Product Information

Vendor: Microsoft

Product: Windows 11

Version: OS Builds 26200.8117 and 26100.8117

Release date: Mar 31, 2026

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