Windows 10 build 20280
| Build of Iron | |
 | |
| OS family | Windows 10 (NT 10.0) |
|---|---|
| Version number | 10.0 |
| Build number | 20280 |
| Build revision | 1000 |
| Build lab | fe_release_dep |
| Compiled on | 2021-01-06 |
Windows 10 build 20280 is a build of Iron, the 21H1 development semester of Windows as a service. It was mentioned with its buildtag in a GitHub issue posted by a Microsoft employee on 15 January 2021.[1] Several screenshots of Windows Terminal running were later posted to GitHub by two employees in January and February 2021.[2][3]