Windows 10 build 21253

10.0.21253
Build of Cobalt
OS familyWindows 10 (NT 10.0)
Version number10.0
Build number21253

Windows 10 build 21253 is a build of Cobalt, the 21H2 development semester of Windows as a service. An issue related to this build was posted to GitHub by a Microsoft employee on 6 November 2020.[1]

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