Insider KB5089573 Windows 11 Insider Release Preview build 26100.8521 (24H2) and 26200.8521 (25H2) - May 19

KB5089573 Windows 11 Cumulative Update Preview build 26100.8524 (24H2) and 26200.8524 (25H2) - May 26

Microsoft Support: May 26, 2026 - KB5089573 (OS Builds 26200.8524 and 26100.8524) Preview This cumulative update for Windows 11, version 25H2 and 24H2 (KB5089573), includes production-quality improvements. Visit the Windows release health dashboard for the latest status on this release...

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• Fixed an issue resulting in the audio volume being unexpectedly muted on certain devices
• Fixed a Windows Push Notification service (WPN) hang, which could lead to some apps not launching and notifications not working.

Gradual rollout​

• [Shared audio] New! Shared audio enables two people to listen to the same audio from a single Windows 11 PC at the same time. It uses Bluetooth® LE Audio broadcast technology to make sharing easy. For example, you can watch a movie while traveling or listen to music while studying together. To start sharing audio, open Quick settings from the taskbar, select Shared audio, choose two supported, paired, and connected devices, and then select Start sharing. To learn more about Shared audio, see Extending Bluetooth® LE Audio on Windows 11 with shared audio.
  
  
  

  Use Shared Audio with Two Bluetooth LE Audio Devices in Windows 11

  This tutorial will show you how to share and stop sharing output audio with two Bluetooth LE Audio devices on supported Windows 11 Copilot+ PC. Starting with Windows 11 build 26220.7051 (Dev and Beta), Microsoft is gradually rolling out shared audio (preview), a new experience built on...

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• [Magnifier in Windows]
  • New! Magnifier now provides clearer and more consistent announcements when working with a screen reader. You’ll hear helpful announcements when you zoom in or out, switch views, turn color inversion on or off, or turn Magnifier on or off. This makes it easy to stay oriented while you work.
  • New! Magnifier now supports magnification of permitted protected content.
  • This update improves smoothness when moving Magnifier in lens mode.
    
    
    

    Change Magnifier View in Windows 11

    This tutorial will show you how to change Magnifier view for your account in Windows 11. Magnifier makes part or all of your screen bigger so you can see words and images better. You can change between the docked, full screen, and lens Magnifier views. When you turn on Magnifier, it will use...

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• [Task Manager]
  • New! Task Manager now offers improved visibility into NPU usage on PCs with an NPU. New optional NPU and NPU Engine columns are available on the Processes, Users, and Details pages, along with NPU Dedicated Memory and NPU Shared Memory optional columns on the Details page. Neural engines that are part of a GPU now appear on the Performance page, providing a more complete view of AI‑related activity.
    
    
    

    See NPU Usage Details in Windows 11

    This tutorial will show you how to see NPU usage details in Windows 11. A NPU (Neural Processing Unit), or AI processor, is a specialized accelerator that handles artificial intelligence (AI) and machine learning (ML) tasks right on your PC instead of sending data to be processed in the cloud...

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  • A new optional Isolation column on the Processes and Details pages shows which apps are running in an AppContainer. You can add any of the new columns by right‑clicking a column header in Task Manager and selecting them from the menu.
    
    
    

    See Which Apps are Running in an AppContainer in Windows 11

    This tutorial will show you how to see which apps are running in an AppContainer in Windows 11. Starting with Windows 11 build 26220.8138 (Beta 25H2), build 26300.8142 (Dev 25H2), build 29576.1000 (Experimental Future Platforms), build 26100.8514 (RP 24H2), and build 26200.8514 (RP 25H2)...

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    Add or Remove Columns in Task Manager in Windows 11

    This tutorial will show you how to add or remove columns for details in Task Manager for your account in Windows 11. Task Manager can be used to view and manage your processes, performance statistics, app history, startup apps, users, process details, and services in Windows 11. Starting with...

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  • This update improves CPU speed display on the Performance page of Task Manager for VMs, so it doesn’t show higher than unexpected numbers after resuming from hibernate.
• [Camera] New! Windows 11’s Multi-App Camera feature allows multiple applications to access your camera stream at the same time. Basic Camera mode in Windows 11 enables simplified camera functionality, useful for troubleshooting or improving stability when your camera is not working correctly. Enterprise admin can now set Multi-App Camera mode or Basic Camera mode through Group Policy, under Computer Configuration > Administrative Templates > Windows Components > Camera > Configure Camera Options.
  
  
  

  Enable or Disable Multiple Apps to Use Camera in Windows 11

  This tutorial will show you how to turn on or off allowing multiple apps to use camera at the same time for your account or all users in Windows 11. Starting with Windows 11 build 27758 (Canary) build 26120.2702 (Dev), build 26100.3323 (24H2), build 26100.8514 (RP 24H2), and build 26200.8514...

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  Enable or Disable Basic Camera Mode in Windows 11

  This tutorial will show you how to turn on or off camera basic mode for your account or all users in Windows 11. Starting with Windows 11 build 27758 (Canary) build 26120.2702 (Dev), build 26100.3323 (24H2), build 26100.8514 (RP 24H2), and build 26200.8514 (RP 25H2), Microsoft added a new...

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• [General Performance] This update accelerates app launch and core shell experiences such as Start menu, Search, and Action Center.
• [Windows Hello]
  • This update optimizes the WinBio service to help reduce latency when resuming after Modern Standby.
  • This update reduces Windows Hello Enhanced Sign-in Security authentication unexpected blocks by resolving missing secure enrollment metadata.
• [Storage]
  • The dialog is updated when creating a Dev Drive to now support specifying the size in GB instead of only MB. This has also been added when changing the size of volumes under Settings > System > Storage.
  • Updated Settings > System > Storage, so rather than seeing a UAC prompt immediately when you go to the page, you’ll only see it when going to view temporary files.
• [Personalization] This update improves:
  • Color selection accuracy when adjusting your accent color to match your wallpaper when the automatic accent color selection is enabled in Personalization settings.
  • Wallpaper persistence reliability across restarts and upgrades, including better support for large‑resolution wallpapers and other scenarios to prevent solid color wallpaper fallback.
• [USB]
  • This update improves reliability for displays attached to USB4 docks and hubs. These displays now light up more consistently, particularly when coming out of standby.
  • The USB3 stack is updated to have additional resiliency and recovery measures in place against certain unexpected hardware faults and conditions. Users will experience higher reliability with USB devices.
• [Sensors] This update Improves resiliency against apps that could keep the sensor hub powered on and drain power, impacting battery life.
• [HID Devices] This update improves battery life related to the HID / Input stack for failed HID devices. Power hygiene is also improved against applications that may initiate HID transfers during standby.
• [Input]The update improves:
  • Reliability of invoking the touch keyboard on the login screen, when inputting your password to sign in, or changing your password.
  • Reliability of explorer.exe when closing the input switcher.
  • Performance of invoking or navigating to clipboard history.
• [Fonts] The Times New Roman font family is updated to improve the rendering of combining diacritical marks across Greek and Cyrillic scripts. This update provides more accurate and visually consistent text by addressing mark positioning issues. As a result, readability is improved, rendering inconsistencies are reduced, and support for global language users working with Greek and Cyrillic text is strengthened.
• [Task Scheduler] Task Scheduler will now persist column width adjustments in task list view across sessions.
• [Desktop icons] This update improves reliability of loading desktop app icon shortcuts.
• [Microsoft Store]
  • This update includes underlying changes to improve download performance and bandwidth usage
  • This update improves error reporting when downloads fail because of Windows Update group policy being enabled.
• [Reliability] This update improves Windows reliability on the sign-in and lock screens, in File Explorer, when using touch gestures on touchscreen devices, and when changing themes in Settings.
• Updated: 5/19/2026 [Windows Hello] This update improves sign-in behavior on the lock and login screens. If you have Windows Hello face or fingerprint set up but need to fallback to use a PIN instead, face or fingerprint is now the default sign-in method every time you sign in — even if you last used a different method. If you choose to use a Windows Hello PIN three times in a row, we will stay with PIN until you switch to another sign-in method.

Normal rollout​

• [Secure Boot] With this update, Windows quality updates include additional high confidence device targeting data, increasing coverage of devices eligible to automatically receive new Secure Boot certificates. Devices receive the new certificates only after demonstrating sufficient successful update signals, maintaining a controlled and phased rollout.

release preview build 26100.8514/26200.8514 - Windows Insider Program

release notes for release preview build 26100.8514/26200.8514

learn.microsoft.com

Announcing new Release Preview builds for 14 May 2026

Hello Windows Insiders, Today we're releasing new builds for Release Preview across our supported versions of Windows 11. Please see the build numbers and links to the release notes below: Windows 11 version 24H2/25H2:

blogs.windows.com

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Select language for Windows 11, version 25H2 (26200.8521) arm64 on UUP dump. UUP dump lets you download Unified Update Platform files, like Windows Insider updates, directly from Windows Update.

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UUP Dump - Download Windows Insider ISO

UUP Dump is the most practical and easy way to get ISO images of any Insider Windows 10 or Windows 11 version, as soon as Microsoft has released a new build. UUP Dump creates a download configuration file according to your choices, downloads necessary files directly from Microsoft servers, and...

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