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

Build 26220.8690

Build 26220.8690: Windows Insider Beta Channel, June 2026. Virtualization crashes addressed and Start menu updates improved

In short

Addresses a crash issue during restarts, virtual machine operations, and some games, and improves Start menu and Startup settings reliability.

Does it affect you? Applies to: Devices enrolled in the Windows Insider Program's Beta Channel.

Build
26220.8690

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

Start menu

For: Beta Channel Insiders

  • The Start menu more reliably reflects newly installed or removed apps without requiring a sign-out or restart.1

Settings

For: Beta Channel Insiders

  • Settings > Apps > Startup works more reliably.2

Fix 1 change

Virtualization

  • An issue that could cause some devices to crash during restarts, virtual machine operations, or some games is addressed.3
    Addresses bugchecks citing HYPERVISOR_ERROR (0x20001) and KMODE_EXCEPTION_NOT_HANDLED (0x1E).

Technical details

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

Data sheet

Released
2026-06-19
Type
Windows Insider build
VersionBuildChannel
— 26220.8690 Beta Channel

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (3)
  1. 1. Improved reliability of Start menu reflecting newly installed or removed apps without requiring sign-out or restart. learn.microsoft.com
  2. 2. Improved reliability of Settings > Apps > Startup. learn.microsoft.com
  3. 3. This update addresses an issue that could result in bugchecks citing HYPERVISOR_ERROR (0x20001) and KMODE_EXCEPTION_NOT_HANDLED (0x1E) errors learn.microsoft.com
Checked automatically: 8 of 8 checks passed, 3 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 4/5, clarity 5/5, 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