Dism /Online /Get-TargetEditions
Dism /online /Set-Edition: <edition name> /AcceptEula /ProductKey:12345-67890-12345-67890-12345 Where <edition name> is the higher edition that you want to change to. (ServerStandard or ServerDatacenter)
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Der schnellere Weg:
slmgr.vbs -ipk neuer_ProductKey (win10)
slmgr.vbs -ato neuer_ProductKey (win server 2019)
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slmgr.vbs -ato ProductKey
