Windows 10 build 21388

10.0.21388
Build of Cobalt
OS familyWindows 11 (NT 10.0)
Version number10.0
Build number21388

Windows 10 build 21388 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 24 May 2021.[1]

References[edit | edit source]

  1. ↑ GitHub
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