KB5083810

Microsoft released cumulative update KB5083810 (Build 26220.8340) for Windows 11, version 25H2 for insiders on the Beta channel.

• Share in Windows. The Windows Share Sheet has become more functional for users with AAD accounts (Azure Active Directory / Microsoft Entra). Right in the share window, you can now find and install suitable applications without going to the Microsoft Store and without interrupting your current task. Previously, this feature was only available to users with personal MSA (Microsoft Account). Now it also works with work and school AAD accounts. Management is entirely up to the user: app recommendations can be turned on or off with a single switch.
• Storage. In recent Insider builds, the Dev Drive creation dialog has been updated: now you can specify the size in gigabytes (GB), not only in megabytes (MB). The same change has been applied to the volume resizing dialog under Settings > System > Storage.
• Task Scheduler. Task Scheduler now saves column width settings in the task list view between sessions.

Known issues are not listed in the official build announcement, however, as with any Insider builds, undocumented errors or unstable performance of third-party applications may occur.

Installation via Windows Update. Go to Settings > Windows Update and click Check for updates. A computer restart is required to complete the installation.

The build is also available for clean installation via ISO images on the Windows Insider website. Please note that this update is intended only for participants of the Windows Insider Program on the Beta channel, not for the general public using the stable version of Windows 11.

How the new features work:

Share in Windows: Uses Windows.ApplicationModel.DataTransfer.ShareTarget API. On share panel invocation, the system checks account type via User.AccountType. For AAD (Entra), dynamic app provider search via ShareProvider.Query is now allowed, bypassing the Store. Recommendations controlled by EnableAppRecommendations registry policy.

Storage: Dev Drive (ReFS) creation/resize dialogs previously used 1 MB blocks only. Update adds input scaling via StorageSize.MagnitudeConverter — GB value converts to MB (value * 1024) before passing to Resize-Partition. UI uses XAML binding to UInt64.

Task Scheduler: taskschd.msc MMC snap-in previously didn't save ListView.ColumnHeader.Width across sessions. Now writes values to HKCU\Software\Microsoft\TaskScheduler\ColumnWidths on close and restores on ListView.OnLoad init.

The last 10 Windows updates: