Windows 10 build 20257
| Build of Iron | |
 | |
| OS family | Windows NT |
|---|---|
| Version number | 10.0 |
| Build number | 20257 |
| Architecture | x86, x64, ARM64 |
| Build lab | fe_release |
| Compiled on | 2020-11-06 |
| Expiration date | |
| Timebomb | 2021-01-31 (+86 days) |
| SKUs | |
| Home (N, Single Language, China) Pro (N, Single Language, China) Pro Education (N) Pro for Workstations (N) Education (N) Enterprise (G, N) Enterprise LTSC Enterprise Evaluation (N) Enterprise multi-session IoT Enterprise Team | |
| Product key | |
| Use a Windows 10 Retail serial | |
| About dialog | |
 | |
Windows 10 build 20257 is the twenty-first Insider Preview build of Iron, the 21H1 development semester of Windows as a service. This build was released on 11 November 2020 to all Windows Insiders on the Dev Channel. The Enterprise LTSC Counterpart was shared on BetaWiki Discord Server on 21 November 2024.
Changes[edit | edit source]
The Start menu tile theming logic has been updated to no longer adjust the color of the tile background for Win32-based applications depending on the detected contrast ratio. Microsoft Edge progressive web applications are excluded from this change.
Support for Unicode Emoji versions 12.1 and 13.0 have been added, adding over 200 newly-supported glyphs coupled with a new gender-neutral design and a redesign of existing emoji.
Bugs[edit | edit source]
- The update process to this build has a chance of hanging for extended periods of time.
- Live preview doesn't work for pinned site tabs on some machines, a gray window is seen instead of the intended content.
- There's a chance of encountering an error with the error code 0x80070426 when using a Microsoft account to sign into certain apps. If this bug is encountered, it can be usually fixed by restarting the system.
- The modern Disk Management page located at Settings → System → Storage → Manage Disks and Volumes in the Settings app is completely blank, and as a result it will not display any drives present on the system. To workaround this issue, use the legacy Disk Management tool (
diskmgmt.msc) to manage disk drives. - Some screens incorrectly have black text on dark backgrounds when using the dark theme.
Gallery[edit | edit source]
Boot screen
