Microsoft releases Windows 11 Insider Preview Build 25276

Microsoft has released a new build of Windows 11 for Windows Insiders on the dev channel. The new build is 25276 and as well as being available via Windows Update it’s also available as an ISO from Microsoft. The main change with this build is a new live kernel memory dump for developers to debug their applications.

UPDATE Here is my hands on video

In Task Manager you can go to the details page and right click on the system process. Then select “Create live kernel memory dump file” option.

The dumps will be written to a fixed location:

%LocalAppData%\Microsoft\Windows\TaskManager\LiveKernelDumps

Another change is the addition of Outlook.com storage alerts on your account page in Settings. This will alert you when your outlook.com mailbox is full.

The reason for the change is that Outlook.com attachments storage will be part of your OneDrive storage going forward. so will count towards your total OneDrive space used.

Here are the other changes, known issues and fixes:

Changes and Improvements

[General]

  • We have updated the dialog that shows when an app has a known compatibility issue to use the new Windows 11 design.

The dialog that shows when an app has a known compatibility issue now uses the new Windows 11 design.

[Windows Security]

  • We are temporarily disabling the updated the Windows Security (firewall) notification dialogs that match the Windows 11 visuals that we introduced with Build 25267. We plan to re-introduce this change in a future flight after addressing some bugs.
  • Windows 11 Insider Preview Build 25267 and later Pro editions no longer allow a user to connect to a remote share by using guest credentials by default, even if the remote server requests guest credentials. This matches the stronger security of the Enterprise and Education editions that’s been in place since Windows 10, to further improve Windows 11 default security. For more information on this behavior and to configure insecure guest authentication to a third party SMB server device that only supports guest authentication, review this documentation.

Fixes

[Taskbar & System Tray]

  • Fixed an issue where switching windows through taskbar previews wasn’t working.
  • Fixed multiple explorer.exe crashes affecting the system tray.
  • When opening a flyout from the taskbar, pressing the Esc key to close the flyout should now return keyboard focus to the button it was invoked from.

[Search on the Taskbar]

The fixes only apply for Windows Insiders who received one of the different treatments for how search looks on the taskbar that began rolling out to Insiders with Build 25252:

  • We fixed the layout issues with the text in the search box on taskbar when using right-to-left display languages like Arabic.
  • Fixed an issue where the selected search style in Taskbar Settings wasn’t persisting across updates. This setting should persist now on subsequent Insider Preview build upgrades.

[File Explorer]

  • Fixed an explorer.exe crash which could happen when opening File Explorer, related to loading your recent files.

[Voice access]

  • Voice access will now work correctly for entering numbers in the Calculator app.
  • Fixed a crash when giving move left and right commands with voice access.

[Input]

  • Fixed an issue where the “insert text” button wasn’t working when using the Pinyin IME in double pinyin mode.

[Widgets]

  • Fixed an issue where the widgets board will get stuck open in an invisible state for Insiders in China (and potentially others), causing clicks on the left side of the screen to not work. If you’re continuing to experience this, please make sure to check the Microsoft Store for the latest app updates.

[Other]

  • To improve clarity, when Windows Defender Credential Guard is enabled, when attempting to use remote desktop with default credentials, it will now explicitly say “Windows Defender Credential Guard does not allow using Windows logon credentials. Please enter your credentials”.

NOTE: Some fixes noted here in Insider Preview builds from the Dev Channel may make their way into the servicing updates for the released version of Windows 11.

Known issues

[General]

  • Using Windows Hello to sign in with facial recognition may not work on Arm64 PCs. A workaround for this is to use the Hello PIN path.
  • [NEW] Some users are experiencing longer than expected update times installing recent builds. We are actively investigating this issue.
  • [NEW] We’re investigating reports that some Insiders are experiencing freezes when using the browser and certain other apps after the previous Dev Channel flight.

[Taskbar & System Tray]

  • The taskbar is sometimes cropped in half when using the tablet-optimized taskbar. You may also see this issue on secondary monitors.

[Search on the Taskbar]

The following known issues only apply for Windows Insiders who received one of the different treatments for how search looks on the taskbar that began rolling out to Insiders with Build 25252:

  • There is an issue where you will be unable to change taskbar search box to show as icon only via taskbar settings in some cases. To work around this issue, first change to a different option and then after, you should be able to choose to show as icon only.

[Task Manager]

  • Some dialogs may not render in the correct theme when applied from Task Manager Settings page.
  • The data content area of the Processes page may flash once when theme changes are applied in the Task Manager Settings page.

[Widgets]

  • In right-to-left display languages like Arabic, content animates out of view before the widgets board resizes when clicking to expanded view of the widgets board.

Via

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