Windows 10 build 19621
| Build of Manganese | |
| OS family | Windows 10 (NT 10.0) |
|---|---|
| Version number | 10.0 |
| Build number | 19621 |
Windows 10 build 19621 is a build of Manganese, the 20H2 development semester of Windows as a service. An issue related to this build was posted to GitHub by a Microsoft employee on 23 June 2020.[1]