Windows 11 Insider Preview Build 25163 is now available on the Dev Channel


by Alexandre Poloboc

With an irresistible desire to always get to the bottom of things and find out the truth, Alex has spent most of his time working as a journalist, presenter,… read more

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  • Want a new Insider Preview build for the Windows 11 Dev Channel?
  • You’re in luck because Microsoft has finished releasing the last one.
  • Check out all the changes, fixes and known issues at Build 25163.

development channel

Yesterday we mentioned the two new Insider Preview builds for Windows 11 that Microsoft released on the beta channel, as 22621.436 and 22622.436 (KB5015888).

We also told you that the Redmond-based tech company is hosting a new Bug Bash event for KB5015888, if you’re into that kind of business.

Now, Microsoft has provided the availability of a new Windows 11 Insider build to the Dev Channel. Build 25163 is the development of Sun Valley 3 (Windows 11 23H2) for Windows Insiders, which will eventually become the version released in 2023.

What’s new in Windows 11 Build 25163

The new version brings a new taskbar feature called Taskbar Overflow, which has a revamped experience for the operating system.

This latest taskbar experience has been carefully designed to give you a more productive switching and launching experience when space is at a premium.

After installing this version, your taskbar will automatically enter this new overflow state when it reaches its maximum capacity.

In this state, the taskbar will offer an entry point to an overflow menu that lets you view all of your overflowed apps in a single space.

The taskbar will offer an entry point to an overflow menu that lets you view all of your overflowed apps in a single space.

You should also be aware that the overflow menu will contain many of the current taskbar behaviors that users are familiar with, such as pinned app support, jump list, and expanded UI.

So after invoking the overflow, the menu will silently close once you click outside of it or navigate to an app.

Just like with KB5015888, discovering devices under nearby sharing when sharing a local file from desktop, file explorer, photos, snipping tool, xbox, and other applications that use the built-in Windows share window has been improved using UDP (Network must be set to private).

Bluetooth has also been added, to discover nearby devices, which means you will now be able to discover and share on more devices, including desktop computers.

Also, when sharing a local file from the sources mentioned above that use the built-in Windows sharing window, you can choose OneDrive as the target to directly upload the file to OneDrive and share it further with control options of access.

Be aware that all of this can be done directly by sharing local files in File Explorer without any context switching or by opening the OneDrive app.

Note icon

This feature is currently only available for Microsoft accounts. A user will need to switch to their Microsoft account via the profile icon in the top right of the sharing window if they are signed in via AAD. AAD support will be added in a future update.


[File Explorer]

  • Fixed explorer.exe crash when moving tabs.
  • Did some work to fix a memory leak when using tabs with File Explorer.
  • Fixed an issue where the File Explorer preview thumbnail in Taskbar, ALT+Tab, and Task View could show the title of an adjacent tab and not the currently selected one.
  • If “Show all folders” is enabled, the dividers in the File Explorer navigation pane should no longer be displayed. With this change, it should also fix issues where separators were displaying unexpectedly in some other folder selectors.
  • Fixed an issue where Narrator would not read tab titles when focus moved through them.
  • Fixed an issue where a closed tab could reappear in File Explorer after dragging File Explorer onto your monitors.
  • Fixed an issue where the row of tabs could expand vertically unexpectedly, covering the contents of the command bar.
  • Removable drives should no longer unexpectedly show up in a section by themselves in the Navigation Pane, breaking the section with This PC and Network.
  • Fixed an issue where the Add New Tab button was not clearly visible when using the Aquatic or Desert contrast themes.
  • The Add New Tab button should no longer overlap the Minimize button in the title bar when using text scaling with many tabs open.


  • Fixed a rare explorer.exe crash that could occur during a Microsoft Teams call, related to window sharing from the taskbar.


  • Change made to help address an issue where using Windows Spotlight on the desktop may revert to a solid color background.
  • Improved padding around uninstall button when using apps > installed apps in grid view.
  • Fixed a few issues that could cause Quick Settings to crash on launch.


  • Fixed an issue that caused some apps to freeze after a copy action if suggested actions were enabled.


  • Fixed a high impact crash affecting the reliability of suggested actions.

Known issues


  • We are investigating reports of SQL Server Management Studio failing to launch for some insiders.
  • Some games that use Easy Anti-Cheat may crash or cause a bug check on your PC.

[File Explorer]

  • Up arrow is misaligned in File Explorer tabs. This will be fixed in a future update.
  • We are working on a fix to resolve reports that launching File Explorer in certain ways while using Dark Mode (e.g. from the command line) shows the Explorer body of files unexpectedly in clear mode.


  • The notification badge number may appear misaligned in the taskbar.
  • In some cases, the notification banner for certain badges will not appear in the widget table.
  • We are working on fixing an issue causing widget preferences (temperature units and pinned widgets) to reset to default unexpectedly.

[Live captions]

  • Some full-screen applications (eg, video players) prevent live captions from being visible.
  • Some applications positioned near the top of the screen and closed before running live captions will relaunch behind the top-positioned live captions window. Use the system menu (ALT+spacebar) while the application has focus to move the application window lower.

Don’t forget that Microsoft has released a new series of videos that will help newcomers to Windows 11 find their way around more easily.

Did you notice any other issues after installing Windows 11 Build 25163? Share your experience with us in the comments section below.


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