Install the license key
I used an evaluation copy from the hosting provider servercheap 4gb 2core 50gb vm and upgrade to a full license or you can download an evaluation copy from MS and do the same
open powershell as admin user
enter below it will show standard and data centre editions
dism /online /Get-TargetEditions
enter below with the supplied product key
Dism /online /Set-Edition:ServerStandard /AcceptEula /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
you will see, mine stuck at 10% for about 10 minutes others have reported longer
Starting to update components...
Starting to install product key...
Finished installing product key.
Removing package Microsoft-Windows-ServerStandardEvalEdition~31bf3856ad364e35~amd64~~10.0.14393.0
[===== 10.0% ]
once complete reboot when asked
in admin powershell run
dism /online /Get-CurrentEdition
you should see serverStandard and you are good to go
Verified purchase: YesCondition: New