Announcing Windows 11 Insider Preview Build 26120.1930 (Dev Channel)

Hello Windows Insiders, today we are releasing Windows 11 Insider Preview Build 26120.1930 (KB5044388) to the Dev Channel.

Changes in Dev Channel builds and updates are documented in two buckets: new features, improvements, and fixes that are being gradually rolled out for Insiders who have turned on the toggle to get the latest updates as they are available (via Settings > Windows Update)* and then new features, improvements, and fixes rolling out to everyone in the Dev Channel. For more information, see the Reminders section at the bottom of this blog post.

Changes and Improvements gradually being rolled out to the Dev Channel with toggle on*

[General]

• This update includes a small set of general improvements and fixes that improve the overall experience for Insiders running this build on their PCs.

[Fonts]

• There is a new simplified Chinese font (Simsun-ExtG) with 9,753 ideographs supporting Unicode Extensions G, H and I. Included is the highly requested character for Biangbiang noodles. This character U+30EDD is said to be the most complicated Chinese character, as you can see in the image below. We are aware that some applications may not be able to display these new extension characters yet.
  • Unicode range G 30000-3134A (4,939 chars)
  • Unicode range H 31350-323AF (4,192 chars)
  • Unicode range I 2EBF0-2EE5D (622 chars)

[Windows Sandbox]

• 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.

Fixes gradually being rolled out to the Dev Channel with toggle on*

[Other]

• 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).

Changes and Improvements gradually being rolled out to everyone in the Dev Channel

[Settings]

• 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, thus indicating the app meets security and privacy requirements to keep customers safe. The key will continue to launch Copilot on devices that have the Copilot app installed until a customer selects a different experience. This setting can be found via Settings > Personalization > Text input. If the keyboard connected to your PC does not have a Copilot key, adjusting this setting will not do anything. We are planning further refinements to this experience in a future flight.

Known issues

[General]

• This build may fail to install with error 0x800f0983. If you see this error, please try to install it again, as it should work on retry. If it stays on 0%, please be patient – it should proceed.

[Start menu]

• If you click or tap on a letter on Start menu’s All apps list, the All apps list may break. If you encounter this issue, please try rebooting or restarting explorer.exe to fix it.

New Clock widgets: Countdown and Timer

We are rolling out a Clock app update to Windows Insiders across all Insider Channels that includes two new clock widgets: countdown and timer. Make sure you have the latest version of the Clock app update from the Microsoft Store (version 11.2408.9.0 and higher). After you open the widgets board, you can open the widgets picker by clicking the “+” button in the top right corner where you would be able to add these widgets to your board.

FEEDBACK: Please file feedback in Feedback Hub (WIN + F) under Apps > Clock App.

Reminders for Windows Insiders in the Dev Channel

• Windows Insiders in the Dev Channel receive updates based on Windows 11, version 24H2 via an enablement package (Build 26120.xxxx).
• Updates delivered to the Dev Channe are in a format that offers a preview of enhancements to servicing technology on Windows 11, version 24H2. To learn more, see https://aka.ms/CheckpointCumulativeUpdates.
• Many features in the Dev Channel are rolled out using Control Feature Rollout technology, starting with a subset of Insiders and ramping up over time as we monitor feedback to see how they land before pushing them out to everyone in this channel.
• For Windows Insiders in the Dev Channel who want to be the first to get features gradually rolled out to you, you can turn ON the toggle to get the latest updates as they are available via Settings > Windows Update*. Over time, we will increase the rollouts of features to everyone with the toggle turned on. Should you keep this toggle off, new features will gradually be rolled out to your device over time once they are ready.
• Features and experiences included in these builds may never get released as we try out different concepts and get feedback. Features may change over time, be removed, or replaced and never get released beyond Windows Insiders. Some of these features and experiences could show up in future Windows releases when they’re ready.
• Some features in active development we preview with Windows Insiders may not be fully localized and localization will happen over time as features are finalized. As you see issues with localization in your language, please report those issues to us via Feedback Hub.
• Because the Dev and Beta Channels represent parallel development paths from our engineers, there may be cases where features and experiences show up in the Beta Channel first.
• Check out Flight Hub for a complete look at what build is in which Insider channel.

Thanks,
Amanda & Brandon