Insider KB5089417 Windows 11 Insider Beta (25H2) build 26220.8370 - May 8

UPDATE 5/15:



As a reminder, Insiders in the Beta Channel have not yet begun moving to the new Beta experience. See the Windows Insider Blog for more details.

Changes and improvements gradually being rolled out with toggle on​

[EDU]​

Free upgrade path to Windows 11 Pro Education for K-12

Windows Insiders in K–12 education environments can now experience a seamless upgrade path from Windows 11 Home to Windows 11 Pro Education edition—at no additional cost. This enables educational organizations to procure Windows 11 Home devices, upgrade them to Windows 11 Pro Education, and bring devices under school management.

Instructions:

• Sign in to the device using a local account
• Launch an elevated Command Prompt and initiate the upgrade by running Clipupgrade.exe
• Sign in with your K–12 organization account to validate eligibility
• The device prepares the upgrade and completes after a restart

Please note: This upgrade is one-way only. Reverting to Windows Home is not supported without a clean OS reinstall.

Feedback: Share your thoughts in Feedback Hub (WIN + F) under Windows Installation.

[Administrator Protection]​

• Improved reliability of Japanese IME usage when Administrator Protection is enabled.
  
  
  

  Enable or Disable Administrator Protection for Admin Approval Mode in Windows 11

  This tutorial will show you how to enable or disable Administrator Protection for admin approval mode elevations in Windows 11. Starting with Windows 11 build 26220.7961 (Beta 25H2) and build 26300.7965 (Dev 25H2), Administrator protection is being gradually re-enabled and aims to protect free...

  www.elevenforum.com

[Other]​

• Fixed a WPN hang in the previous flight, which was leading to notification issues and certain apps hanging on launch.
• Improved reliability of loading desktop app icon shortcuts.

Reminders for Windows Insiders in the Beta Channel (Soon transitioning to the new Beta experience)​

• Updates are based on Windows 11, version 25H2 via an enablement package (Build 26220.8340).
• Many features are rolled out using Controlled Feature Rollout technology, starting with a subset of Insiders and ramping up over time as we monitor feedback to see how they land before pushing them out to everyone in this channel.
• The desktop watermark shown at the lower right corner of the desktop is normal for Windows Insider pre-release builds.
• For Windows Insiders who want to be the first to get features gradually rolled out to you, you can turn ON the toggle to get the latest updates as they are available via Settings > Windows Update*. Users can also use the Feature flags settings page to enable certain features. Over time, we will increase the rollouts of features to everyone with the toggle turned on. Should you keep this toggle off, new features will gradually be rolled out to your PC over time once they are ready.
• Features and experiences included in these builds may never get released as we try out different concepts and get feedback. Features may change over time, be removed, or replaced and never get released beyond Windows Insiders. Some of these features and experiences could show up in future Windows releases when they’re ready.
• Some features in active development we preview with Windows Insiders may not be fully localized and localization will happen over time as features are finalized. As you see issues with localization in your language, please report those issues to us via Feedback Hub.
• Check out Flight Hub for a complete look at what build is in which Insider channel.

Check Windows Updates


ISO from Microsoft:



UUP Dump:

64-bit ISO download:

ARM64 ISO download: