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Windows Insider

Build 26340.9882

Build 26340.9882: Windows Insider Experimental Channel, November 2026. Windows Hello sign-in and Narrator math on Braille displays

In short

Windows Hello lets people enter a PIN before face or fingerprint checks finish, and Narrator can show supported math on Braille displays. These features are rolling out gradually to Experimental Channel Insiders.

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

Build
26340.9882

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 4 changes

Windows Hello sign-in

Gradual rollout

For: Insiders using Windows Hello

  • Sign-in and unlock let people use whichever method works first, without waiting for face or fingerprint checks before entering a PIN. After some events, such as a restart, a PIN is required first.1

Live captions

Gradual rollout

For: Insiders using Live captions

  • Live captions can transcribe system audio, microphone audio, or both.2

Input

Gradual rollout

For: Insiders who see Sticky Keys or Filter Keys prompts

  • Prompts to turn on Sticky Keys or Filter Keys now let people choose not to be asked again.3

Settings

Gradual rollout

For: Insiders with a Microsoft account

  • Microsoft account benefits and services are easier to find in Windows Settings.4

New features 2 changes

Windows Hello logging for IT admins

Gradual rollout
  • IT admins can see which Windows Hello sign-in methods are set up and whether sign-in attempts fail.5
    Event 4628 records the Windows Hello methods a user has set up and the method used to sign in. Event 4629 records failed Windows Hello sign-in attempts. Both use the existing Audit Logon policy. Events 5010 and 7010 in HelloForBusiness > Operational record each sign-in and unlock, along with the result.

Math equations in Braille with Narrator

Gradual rollout

For: Insiders using Narrator with a Braille display

  • Narrator can show supported equations on a connected Braille display while reading them aloud.6
    This works with supported equations in Microsoft Word, PowerPoint, Edge, and Google Chrome. Supported math output formats are Nemeth, UEB, CMU, Vietnamese, Swedish, LaTeX, and ASCIIMath. Narrator Math settings also allow changes to reading language, speech behavior, and navigation preferences.

Technical details

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

Data sheet

Released
2026-11-06
Type
Windows Insider build
VersionBuildChannel
— 26340.9882 Experimental Channel

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (6)
  1. 1. You no longer have to wait for face or fingerprint recognition to finish before entering your PIN. Use whichever method works first. learn.microsoft.com
  2. 2. In Live captions settings, you can now choose system audio, your microphone, or both, so captions follow the sound you care about. learn.microsoft.com
  3. 3. If you don't use these keyboard features, you can choose not to be asked again directly from the dialog, helping you continue what you're doing with fewer interruptions. learn.microsoft.com
  4. 4. It's now easier to discover the benefits and services available with your Microsoft account, right in Windows Settings. learn.microsoft.com
  5. 5. In Event Viewer > Windows Logs > Security, event 4628 records the Windows Hello methods a user has set up and which method they used to sign in (PIN, face, fingerprint, or no Windows Hello). learn.microsoft.com
  6. 6. When Narrator reads supported equations in Microsoft Word, PowerPoint, Edge, or Google Chrome, Narrator Math is now shown on your connected Braille display, letting you explore them by touch while listening to Narrator. learn.microsoft.com
Checked automatically: 8 of 8 checks passed, 6 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 4/5. 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