For Windows Insider members of the Dev channel, Microsoft today released a preview update for Windows 10 Build 20251, which belongs to the FE_RELEASE branch. This preview update focuses entirely on feature fixes and detail polishing, and does not introduce any new features.
The Windows 10 Build 20251 update log is as follows:
Fixes an issue that caused the background of some dialog boxes to unexpectedly appear gray instead of white in the last two releases
Fixes an issue that prevented some Insiders from using the Power button in the Start menu on the taskbar recently.
Fixes an error check that caused some Insiders to see system process exceptions that were not handled.
Fixes an opengl32.dll crash.
Fixes an issue that may cause the Settings app to stop responding when checking for updates immediately after an upgrade.
Fixes an issue that might cause the settings app to send notifications that show only “new notifications.”
Fixes an issue that prevented the search indexer from retrieving metadata from HEIF and WebP files, so you can’t use metadata such as shooting dates to search for those files.
Fixes an issue that caused the Cast to Device option in movies (and other media playback applications) to not work when you click on the listed device in the latest version.
Fixes an issue that may cause you to lose response shortly after connecting using miracast cast screens.
Windows 10 Iron Build 20251 known issues
Since Build 20236, Microsoft has been working to fix problems that prevent non-system disks from installing games from the Microsoft Store to non-system disks. To prevent this from happening, you must change the default storage for new content to a secondary drive before installing the game. You can do this in Settings, Storage, and Change where new content is saved.
When we try to install a new version, we are investigating reports that the update process has been paused for a long time.
Real-time preview of fixed sites has not been enabled for all Insiders, so you may see a gray window when you hover over thumbnails in the taskbar. We are continuing our efforts to improve the experience.
Efforts are under way to enable a new taskbar experience for an existing fixed site. In the mean time, you can unfig the site from the taskbar, remove it from the edge/apps page, and re-pin the site.
Fixing an issue that caused some devices to DPC_WATCHDOG_VIOLATION an error check.
Windows Insiders on ARM PCs, such as Surface Pro X, will notice that Windows PowerShell will not start on this release. The workaround is to use Windows PowerShell (x86) or Windows PowerShell ISE (x86) from the Start menu if you need to use PowerShell. Or download the machine-running, new Modern PowerShell 7 that can take advantage of ARM. In addition, the icon is more beautiful.
Microsoft is investigating reports that some users are using their Microsoft accounts to log in to various applications and see error 0x80070426. If this happens, restarting the PC may resolve the issue.