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  Windows 10 Insider Preview, une nouvelle Build 20211 – 21H1 est disponible pour les Insiders, via Windows Update – canal Dev (Dev Channel) (ex canal Rapide)

Announcing Windows 10 Insider Preview Build 20211 

Une mise à jour cumulative KB4581021 devait être testée sur la Build 20211, mais le test a échoué (0x80070002 = ERROR_FILE_NOT_FOUND) et la mise à jour a été retirée pour l’instant !

https://blogs.windows.com/windows-insider/2020/09/10/announcing-windows-10-insider-preview-build-20211/

UPDATE 9/11:Today we have released Cumulative Update Build 20211.1005 (KB4581021). This update does not include anything new and is designed to test our servicing pipeline. Thanks to reports from Windows Insiders who reported issues installing this update, we have discovered a bug that requires us to pull the update for now while we continue to investigate