Windows 10 build 21307
| Build of Cobalt | |
| OS family | Windows 10 (NT 10.0) |
|---|---|
| Version number | 10.0 |
| Build number | 21307 |
| Build revision | 1000 |
| Compiled on | 2021-02-01 |
Windows 10 build 21307 is a build of Cobalt, the 21H2 development semester of Windows as a service. It was referenced in MergeNupkgParts.cmd and two .nuspec files, which were posted to GitHub by a Microsoft employee on 3 February 2021.[1]