Microsoft Windows 11 25H2 Update Version OS Builds 26200.8524 and 26100.8524

KB5089573 updates Windows 11 version 25H2 and 24H2 with production-quality improvements, new features, and reliability fixes. It also addresses the installation failure error 0x800f0922 and adds Secure Boot certificate rollout controls. Reference IDs: KB5089549, KB5092734.

• Secure Boot: increases coverage for devices eligible to automatically receive new Secure Boot certificates through higher-confidence targeting data.
• Secure Boot: adds the LimitSecureBootRequiredServiceData Group Policy and MDM setting to limit Secure Boot service data sent to Microsoft.
• Windows Hello: reduces unexpected authentication blocks in Enhanced Sign-in Security by resolving missing secure enrollment metadata.

• Fixes installation failures with error 0x800f0922 on devices with limited EFI System Partition free space.
• Improves Task Manager CPU speed display for VMs after resuming from hibernate.
• Improves reliability of USB4 dock and hub displays when waking from standby.
• Improves reliability and power handling for USB3, sensors, and HID/input devices.
• Improves touch keyboard, input switcher, clipboard history, desktop shortcut loading, and File Explorer reliability.
• Improves wallpaper persistence, accent color selection, and overall sign-in/lock screen reliability.
• Improves Microsoft Store download performance, bandwidth usage, and failure reporting.
• Improves rendering of Times New Roman combining diacritical marks for Greek and Cyrillic scripts.

• Shared Audio lets two people listen to the same audio from one Windows 11 PC using Bluetooth LE Audio broadcast.
• Magnifier adds clearer screen reader announcements and support for magnifying permitted protected content.
• Task Manager adds optional NPU, NPU Engine, NPU memory, and Isolation columns for better AI and app visibility.
• Camera settings now support Multi-App Camera and Basic Camera modes, including Group Policy control for enterprises.
• Windows Setup now allows choosing a custom user folder name during setup.
• Windows Search now finds and prioritizes files with as few as two characters.
• Dev Drive creation and volume resizing now support gigabyte sizing.
• Task Scheduler now preserves column width settings across sessions.

• This update is available as a gradual rollout and a normal rollout; feature availability may vary by device.
• If earlier updates are installed, only the new updates in this package are downloaded and installed.
• The update includes servicing stack update KB5092734 for OS build 26100.8519.
• Microsoft notes that Secure Boot certificates used by most Windows devices begin expiring in June 2026 and recommends reviewing the certificate update guidance.
• The documentation no longer lists the known issue May 2026 security update fails to install with error 0x800f0922 because this update addresses it.

Product Information

Vendor: Microsoft

Product: Windows 11

Product type: Software

Application category: Utilities

Platform: Windows

Variant: 25H2

Version: OS Builds 26200.8524 and 26100.8524

Vendor information published: May 26, 2026

Original release notes: View on vendor site

Published on updatealert.io: Jun 3, 2026

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