Skip to the content
The Update Bureau
Windows 11 Windows 11 Insider Future platforms Insider Preview, Experimental Channel
Windows Insider

Build 29648.1000

Build 29648.1000: Windows Insider Experimental Channel, August 2026. WMIC and Drag Tray removed; Magnifier launch fixed

In short

Removes WMIC and Drag Tray, adjusts Windows Security, and fixes Magnifier launch and app UI shifting. Some Insiders still report a blinking cursor or error 0x80070005 when updating.

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

Build
29648.1000

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

Fixes 2 changes

Accessibility

Gradual rollout
  • Magnifier launching works again for some Insiders who had trouble launching it in the previous flight.1

Other

Gradual rollout
  • Unexpected interface shifting after recent flights stops in some apps.2
    Fixes an underlying issue that caused unexpected UI shifting in certain apps.

Removals 2 changes

Windows Management Instrumentation Command-line (WMIC)

Gradual rollout

For: Insiders in the Experimental Channel

  • The WMIC command-line utility is removed from this release.3
    This is part of the ongoing deprecation and removal of Windows Management Instrumentation Command-line (WMIC) from Windows.

Drag Tray

Gradual rollout

For: Insiders who use Drag Tray

  • Drag Tray is removed in this build. A possible replacement experience may come in a later update.4

Improvement 1 change

Windows Security

Gradual rollout

For: Insiders in the Experimental Channel

  • Windows Security gets small interface adjustments to align it with other Windows apps; you might notice subtle differences.5

New feature 1 change

Windows Security

Gradual rollout
  • Enterprise devices with Microsoft Defender for Endpoint enabled now show this information at the top of Virus & threat protection.6

Technical details

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

Data sheet

Released
2026-08-17
Type
Windows Insider build
VersionBuildChannel
— 29648.1000 Experimental Channel

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (6)
  1. 1. Fixed an issue impacting Magnifier launching for some Insiders in the previous flight. learn.microsoft.com
  2. 2. Fixed an underlying issue that caused some unexpected UI shifting in certain apps after the latest flights. learn.microsoft.com
  3. 3. Windows Management Instrumentation Command-line (WMIC) has been removed in this release. learn.microsoft.com
  4. 4. Based on feedback, we're removing the experience in this build. learn.microsoft.com
  5. 5. We're starting to make some small UI adjustments to the Windows Security app to improve alignment with other Windows apps. learn.microsoft.com
  6. 6. If you have an Enterprise device with Microsoft Defender for Endpoint enabled, information about this will now be displayed at the top of the Virus & threat protection page. 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 4/5, clarity 4/5, 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