Windows 10 build 20171
| Build of Iron | |
 | |
| OS family | Windows 10 (NT 10.0) |
|---|---|
| Version number | 10.0 |
| Build number | 20171 |
| Architecture | x64 |
Windows 10 build 20171 is a build of Iron, the 21H1 development semester of Windows as a service. A screenshot showing Windows PowerShell in this build was posted to GitHub by a Microsoft employee on 17 July 2020.[1]