Upgrading from Windows Server 2016 Standard “Evaluation” to a fully registered version

Open your command line as administrator and type in to check your available Target Editions : Dism /Online /Get-TargetEditions Ten type in as below and put your edition name in as follow : Dism /Online /Set-Edition:<edition name> /AcceptEula /ProductKey:12345-67890-12345-67890-12345 The Restart of the Server could be a nessesary afterwards ! Job done.