Windows 10 build 21349.1004
| Build of Cobalt | |
| OS family | Windows 11 (NT 10.0) |
|---|---|
| Version number | 10.0 |
| Build number | 21349 |
| Build revision | 1004 |
| Architecture | x64 |
Windows 10 build 21349.1004 is a build of Cobalt, the 21H2 development semester of Windows as a service. Several comments related to this build were posted to GitHub by different Microsoft employees in May and July 2021.[1][2]