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Windows 11 Windows 11 Insider Future platforms Insider Preview, Experimental Channel
Windows Insider

Build 29634.1000

Build 29634.1000: Windows Insider Experimental Channel, July 2026. Voice isolation and braille display support

In short

Adds Voice Isolation in Voice Access and support for HID braille displays in Narrator, alongside account, input, and reliability changes.

Does it affect you? Applies to: Devices enrolled in the Experimental Channel, also called the Experimental Future Platforms channel.

Build
29634.1000

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 10 changes

Windows Insider channel movement

Gradual rollout
  • Insiders in the Experimental Future Platforms channel are beginning to move to the new Windows Insider experience.1

Certificate renewal for Windows Insiders

Gradual rollout

For: Windows Insiders

  • This build includes a renewed flight certificate. The current certificate expires on August 11, 2026, so update to this build or later before then to keep receiving future Insider Preview updates.2
    Windows Insider Preview builds use flight certificates that are renewed periodically to help ensure Insider devices remain on supported builds.

Account control

Gradual rollout
  • The Account Control flyout has a refreshed design and a subscription badge that makes account status easier to see.3
    The flyout also presents account benefits and storage details.

Input

Gradual rollout
  • The emoji panel now uses GIPHY to browse and share GIFs.4
    GIPHY replaces the Tenor API, which has been deprecated. Open the panel with Windows key + period (.).

Settings

Gradual rollout
  • Navigating to the Startup apps page in Settings is more reliable.5

Taskbar

Gradual rollout

For: People using a PC in a tablet posture

  • The system tray loads more reliably when you use your PC in a tablet posture.6

Start menu

Gradual rollout 2 items
  • The Start menu is more likely to retain your selected view.7
  • Keyboard navigation works better when focus is on the apps list in Start.8

Date and time

Gradual rollout
  • Windows more reliably detects when to show a time zone change notification.9

Display and graphics

Gradual rollout

For: People using certain apps across multiple monitors

  • Some apps that span multiple monitors render content more reliably while you scroll.10

New features 3 changes

Voice isolation in Voice Access

Gradual rollout
  • Voice Isolation helps Voice Access understand your speech by filtering other voices and background noise. Voice data stays on your device.11
    Choose Voice Isolation under Voice Access settings > Improve speech recognition and complete the guided voice setup. The other modes are Remove background noise only and No filtering.

Narrator

Gradual rollout 2 items
  • HID braille displays can connect to Narrator over USB without extra setup, or wirelessly after Bluetooth pairing.12
    Compatible examples include the Orbit Reader 20, Orbit Slate 340, Freedom Scientific Focus 40, and APH Mantis Q40. Customize braille input and output in Settings > Accessibility > Narrator > Braille.
  • HID braille displays work over USB during the initial Windows setup, so deaf-blind users can set up a PC independently from the first screen.13
    Support applies during the initial Windows setup experience (OOBE).

Technical details

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

Data sheet

Released
2026-07-27
Type
Windows Insider build
VersionBuildChannel
— 29634.1000 Experimental Channel

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (13)
  1. 1. we will begin moving users in the Experimental Future Platform Channel to the new Windows Insider experience. learn.microsoft.com
  2. 2. The current flight certificate expires on August 11, 2026, so please update your device to this build or later containing the renewed flight certificate before that date. learn.microsoft.com
  3. 3. The Windows 11 Account Control flyout has a refreshed, modern design and a clear subscription badge to make account status instantly visible. learn.microsoft.com
  4. 4. The emoji panel (Windows key + period (.)) now uses GIPHY as the GIF provider, delivering a smoother GIF browsing and sharing experience following the deprecation of the Tenor API. learn.microsoft.com
  5. 5. Improved reliability of navigating to the Startup apps page in Settings. learn.microsoft.com
  6. 6. Improved reliability of loading the system tray area of the taskbar when using your PC in a tablet posture. learn.microsoft.com
  7. 7. Improved reliability of Start menu view preferences, ensuring your selected view is retained. learn.microsoft.com
  8. 8. Improved keyboard navigation when keyboard focus is set to the apps list within Start menu. learn.microsoft.com
  9. 9. Improved detection for triggering time zone change notifications. learn.microsoft.com
  10. 10. Improves the reliability of rendering content while scrolling for certain apps spanning across multiple monitors. learn.microsoft.com
  11. 11. Voice Isolation filters out other voices and background noise so Voice Access can better understand you. All processing happens privately on your device. learn.microsoft.com
  12. 12. If your display supports HID, simply connect it via USB and start reading with no additional setup required. For Bluetooth, pair your HID braille display in Settings > Bluetooth & devices like any other accessory learn.microsoft.com
  13. 13. HID braille displays now work during the initial Windows setup experience (OOBE) over USB, meaning users who are deaf-blind can set up their PC independently from the first screen. learn.microsoft.com
Checked automatically: 8 of 8 checks passed, 13 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