Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" | Select ProductName, EditionID, InstallationType Also run:
Stop Wasting Time with Time Bombs: Why You Need the Genuine, Non-Evaluation ISO Windows Server 2016 Standard Iso Not Evaluation
dism /online /get-targeteditions For Standard, you should see ServerStandard as an available target. Windows Server 2016 Standard Iso Not Evaluation
dism /online /get-currentedition You will likely see ServerStandardEval or ServerDatacenterEval . Windows Server 2016 Standard Iso Not Evaluation