Windows 10 build 21306
Not to be confused with Windows 11 build 21306, which was built from a different branch and features an incomplete version of the Windows 11 user experience.
| Build of Cobalt | |
| OS family | Windows 10 (NT 10.0) |
|---|---|
| Version number | 10.0 |
| Build number | 21306 |
| Architecture | x64 |
Windows 10 build 21306 is a build of Cobalt, the 21H2 development semester of Windows as a service. Issues related to this build were posted to GitHub by a Microsoft employee on 5 February 2021.[1][2]