Stap 1: Jo iepenje cmd (rinne as administrator), then you type
dism /online /get-targeteditions
You will see Windows Server 2019 editions you can upgrade
Stap 2: You copy and paste this code in cmd
If you want to upgrade to Windows Server 2019 Datacenter jo typ:
dism /online /set-edysje:serverdatacenter /productkey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX /accepteula
Noat:
as jo "upgrade mislearre" sjogge, jo opnij starte jo Windows Server 2019. It will upgrade Windows Server 2019 Evaluation to Datacenter.