Server: Licensing

Guest activation

Eval Licenses have to be converted to normal licenses first. See here.

Core from Eval

Even from Standard Core the update doesnt seem to work.¹⁾

DISM /online /Set-Edition:ServerDatacenterCor /ProductKey:WMDGN-G9PQG-XVVXX-R3X43-63DFG /AcceptEula
 
#or
 
DISM /online /Set-Edition:ServerDatacenter /ProductKey:WMDGN-G9PQG-XVVXX-R3X43-63DFG /AcceptEula

after Restart:

slmgr /ipk H3RNG-8C32Q-Q8FRX-6TDXV-WMBMW
slmgr /ato

WinServer License from Eval to Retail

GUI

You MUST install this software using the desktop experience edition.

DISM /online /Set-Edition:ServerDatacenter /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX /AcceptEula

after Restart:

slmgr /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
slmgr /ato

The DISM command does not set the product key, so the slmgr is essential.

Core

Even from Standard Core the update doesnt seem to work.²⁾

DISM /online /Set-Edition:ServerDatacenterCor /ProductKey:WMDGN-G9PQG-XVVXX-R3X43-63DFG /AcceptEula

after Restart:

slmgr /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
slmgr /ato

Trial expansion

slmgr -rearm

¹⁾ , ²⁾

from here