Windows 10 build 21279 (rsmaster)

10.0.21279.rsmaster.201209-143?
Build of Cobalt
Screenshot
OS familyWindows 10 (NT 10.0)
Version number10.0
Build number21279
Build labrsmaster
Compiled on2020-12-09
SKUs
Enterprise

Windows 10 build 21279 (rsmaster) is a build of Cobalt, the 21H2 development semester of Windows as a service. A screenshot of this build was posted to GitHub by a Microsoft employee on 15 December 2020.[1]

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