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Windows Insider

Build 26220.9492

Build 26220.9492: Windows Insider Beta Channel, September 2026. Live Captions screen reader setting and File History backup fix

In short

Beta Channel Insiders get a new Live Captions setting for screen reader audio, plus fixes for Linux VM folder sharing and File History backups.

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

Build
26220.9492

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

Fixes 2 changes

Hyper-V

  • Folders shared from Windows appear and can be accessed in affected Linux virtual machines again.1
    Fixes Plan9 host-folder sharing failures in some applications using HCS-managed virtual machines.

Other

  • File History backups no longer unexpectedly fail with a “No usable drives found” error.2

Improvement 1 change

Live Captions

  • A new setting controls whether Live Captions transcribes screen reader audio. It is off by default, keeping captions focused on microphone and system audio.3
    The Include Screen Reader audio setting is off by default.

Technical details

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

Data sheet

Released
2026-09-18
Type
Windows Insider build
VersionBuildChannel
— 26220.9492 Beta Channel

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (3)
  1. 1. Fixed an issue where some applications that used HCS-managed virtual machines experienced issues when sharing host folders with Linux VMs using Plan9. learn.microsoft.com
  2. 2. Fixed an issue where backing up using File History unexpectedly failed with an error saying, "No usable drives found." learn.microsoft.com
  3. 3. We're improving Live Captions with a new Include Screen Reader audio setting, which is off by default. 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 5/5, 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