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Windows 11 Windows 11 Insider 25H2 Insider Preview, Beta Channel
Windows Insider

Build 26220.8370

Build 26220.8370: Windows Insider Beta Channel, May 2026. Pro Education upgrade and fixes for notification and app issues

In short

Beta Channel Insiders get a no-cost upgrade path from Windows 11 Home to Pro Education for eligible K–12 environments, plus reliability improvements and a fix for notification and app launch issues.

Does it affect you? Applies to: Devices enrolled in the Windows Insider Program Beta Channel. The Pro Education upgrade applies to Insiders in K–12 education environments.

Build
26220.8370

This is a test build for people in the Windows Insider Program. Features in it can change, be removed, or never reach regular Windows releases.

What changes

Improvements 2 changes

Administrator Protection

Gradual rollout

For: Insiders using Japanese IME with Administrator Protection enabled

  • Japanese input is more reliable when Administrator Protection is enabled.1
    Improves reliability of Japanese IME usage when Administrator Protection is enabled.

Desktop app icon shortcuts

Gradual rollout

For: Insiders using desktop app icon shortcuts

  • Desktop app icon shortcuts load more reliably.2

Fix 1 change

Other

Gradual rollout

For: Insiders experiencing notification issues or app launch hangs

  • A WPN hang from the previous build that led to notification issues and certain apps hanging on launch is fixed.3
    Fixes a WPN hang that was leading to notification issues and certain apps hanging on launch.

New feature 1 change

EDU Licensing

Gradual rollout

For: Insiders in K–12 education environments

  • Eligible K–12 education organizations can upgrade Windows 11 Home devices to Pro Education at no additional cost. The upgrade is one-way; returning to Home requires a clean OS reinstall.4
    Start the upgrade by running Clipupgrade.exe from an elevated Command Prompt. Sign in with a K–12 organization account to validate eligibility; completion requires a restart.

Technical details

Data sheet · Security · Downloads · Components Click to collapse or expand

Data sheet

Released
2026-05-08
Type
Windows Insider build
VersionBuildChannel
— 26220.8370 Beta Channel

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (4)
  1. 1. Improved reliability of Japanese IME usage when Administrator Protection is enabled. learn.microsoft.com
  2. 2. Improved reliability of loading desktop app icon shortcuts. learn.microsoft.com
  3. 3. Fixed a WPN hang in the previous flight, which was leading to notification issues and certain apps hanging on launch. learn.microsoft.com
  4. 4. 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. learn.microsoft.com
Checked automatically: 8 of 8 checks passed, 4 quoted passages
  • Quotes found in the official pages: passed
  • Numbers found in the sources: passed
  • Vulnerabilities from the dossier only: passed
  • Links to allowed domains only: passed
  • Every official change covered: passed
  • Readable plain text: passed
  • Changes confirmed by the file list: passed
  • Sources agree: passed

A second AI read the text against the sources: correctness 5/5, clarity 4/5, completeness 5/5. How we work

Published by The Update Bureau. Written with AI from Microsoft's own documents, checked by rules and a second AI. How we work · Report a mistake