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Build 26120.1930

Build 26120.1930: Windows Insider Dev Channel, October 2024. Copilot key controls and countdown and timer widgets

In short

Dev Channel Insiders get a setting to choose what the Copilot key opens, plus a new Chinese font and Windows Sandbox updates. A separate Clock app update adds countdown and timer widgets across Insider channels.

Does it affect you? Applies to: Devices enrolled in the Dev Channel. The Clock app update is rolling out to Windows Insiders across all channels.

Build
26120.1930
Review notes Additional details from the official release notes (2) Read notes
  • Known issues Installation may fail with error 0x800f0983; retry if that happens, and be patient if installation stays at 0% because it should proceed. The Start menu All apps list may break after you select a letter; rebooting or restarting explorer.exe may fix it.
  • In detail If installation stays at 0%, be patient; it should proceed.

The official sources are linked at the end of the page.

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

New features 3 changes

Fonts

Gradual rollout

For: Dev Channel Insiders with the latest-updates toggle on

  • A new simplified Chinese font adds 9,753 ideographs, including the character for Biangbiang noodles. Some apps might not display the new characters yet.1
    The Simsun-ExtG font supports Unicode Extensions G, H, and I.

Settings

Gradual rollout

For: Dev Channel Insiders

  • You can choose an eligible app to open when you press the Copilot key. The setting is under Settings > Personalization > Text input; it has no effect if your keyboard has no Copilot key.2
    The selected app must be MSIX packaged and signed. The Copilot key continues to open Copilot until a different experience is selected.

Clock app

Gradual rollout

For: Windows Insiders across all channels

  • New countdown and timer widgets are available for the widgets board.3
    Requires Clock app version 11.2408.9.0 or higher.

Improvements 2 changes

General

Gradual rollout

For: Dev Channel Insiders with the latest-updates toggle on

  • This build includes a small set of general improvements and fixes, with no specific effects listed.4

Windows Sandbox

Gradual rollout

For: Dev Channel Insiders with the latest-updates toggle on

  • The Windows Sandbox Client Preview is now available to all Dev Channel Insiders.5

Fix 1 change

Boot menu

Gradual rollout

For: Some Dev Channel Insiders with dual-boot devices and the latest-updates toggle on

  • For some Insiders with dual-boot devices, the boot menu displays with the correct color and uses the available space correctly.6

Technical details

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

Data sheet

Released
2024-10-04
Type
Windows Insider build
VersionBuildChannel
— 26120.1930 Dev Channel

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (6)
  1. 1. There is a new simplified Chinese font (Simsun-ExtG) with 9,753 ideographs supporting Unicode Extensions G, H and I. blogs.windows.com
  2. 2. We are adding the ability to configure the Copilot key. You can choose to have the Copilot key launch an app that is MSIX packaged and signed blogs.windows.com
  3. 3. We are rolling out a Clock app update to Windows Insiders across all Insider Channels that includes two new clock widgets: countdown and timer. blogs.windows.com
  4. 4. This update includes a small set of general improvements and fixes that improve the overall experience for Insiders running this build on their PCs. blogs.windows.com
  5. 5. The new Windows Sandbox Client Preview that began rolling out with Build 26120.1843 should now be available to all Insiders in the Dev Channel. blogs.windows.com
  6. 6. Fixed an issue for some Insiders with dual boot devices, where the boot menu (where you select which OS to boot into) wasn’t displaying correctly (the color was wrong, and it might only display in half the available space). blogs.windows.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 3/5, 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