Windows 10 build 21276
| Build of Cobalt | |
| OS family | Windows 10 (NT 10.0) |
|---|---|
| Version number | 10.0 |
| Build number | 21276 |
| Build revision | 1002 |
| Architecture | x64 |
| Build lab | rs_onecore_dep |
| Compiled on | 2020-12-06 |
Windows 10 build 21276 is a build of Cobalt, the 21H2 development semester of Windows as a service. An issue related to this build was posted to GitHub by a Microsoft employee on 8 December 2020.[1]