Urratsa 1: cmd irekitzen duzu (exekutatu administratzaile gisa), then you type
dism /online /get-targeteditions
You will see Windows Server 2019 editions you can upgrade
Urratsa 2: You copy and paste this code in cmd
If you want to upgrade to Windows Server 2019 Idazten duzun estandarra:
dism /online /set-edition:serverstandard /productkey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX /accepteula
Ohar:
"berritzeak huts egin du" ikusten baduzu, zure Windows Server berrabiarazi duzu 2019. It will upgrade Windows Server 2019 Evaluation to Stardard.