Windows 10 build 20129
| Build of Iron | |
| OS family | Windows 10 (NT 10.0) |
|---|---|
| Version number | 10.0 |
| Build number | 20129 |
| Architecture | ARM64 |
Windows 10 build 20129 is a build of Iron, the 21H1 development semester of Windows as a service. An issue related to this build was posted to GitHub by a Microsoft employee on 12 May 2020.[1]