Windows 10 build 20151
| Build of Iron | |
| OS family | Windows 10 (NT 10.0) |
|---|---|
| Version number | 10.0 |
| Build number | 20151 |
| Build lab | rs_prerelease |
Windows 10 build 20151 is a build of Iron, the 21H1 development semester of Windows as a service. A comment about this build was posted to GitHub by a Microsoft employee on 17 June 2020.[1]