Windows 10 build 20257

Windows 10 build 20257 is the twenty first Insider Preview of Iron. It was released on 11 November 2020 to all Windows Insiders on the Dev Channel.

Changes

 * The start menu tile theming logic has been updated so that the tile background for Win32 apps will no longer be adjusted basing on detected contrast ratio. However, Microsoft Edge PWAs are excluded from this change.

Bugs

 * Live preview doesn't work for pinned site tabs on some machines.
 * Some users are seeing error 0x80070426 when using their Microsoft account to sign into various apps. Restarting usually fixes this.
 * The modern Disk Management page (Settings → System → Storage → Manage Disks and Volumes) in the Settings app is blank, as a result, it won't display any drives present. To workaround this issue, use the classic Disk Management tool to manage disk drives.
 * Some screens incorrectly have black text on dark backgrounds when the dark theme is used.

Source

 * Official announcement