Windows 10 build 21257

10.0.21257
Build of Cobalt
No image available
OS family
Architecture
Compiled
Timebomb
Works in

Windows 10 build 21257 is a build of Cobalt, the 21H2 development semester of Windows as a service. Several issue related to this build were posted to GitHub by different Microsoft employees on 13 November 2020.[1][2]

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