dism /online /set-edition:serverstandard /productkey:N69G4-B89J2-4G8F4-WWYCC-J464C /accepteula
Chaves públicas para conversão
Windows Server 2019 - Chave de configuração do cliente KMS
Windows Server 2019 Datacenter - WMDGN-G9PQG-XVVXX-R3X43-63DFG
Windows Server 2019 Standard - N69G4-B89J2-4G8F4-WWYCC-J464C
Windows Server 2019 Essentials - WVDHN-86M7X-466P6-VHXV7-YY726
Windows Server 2016 Datacenter - CB7KF-BWN84-R7R2Y-793K2-8XDDG
Windows Server 2016 Standard - WC2BQ-8NRM3-FDDYY-2BFGV-KHKQY
Windows Server 2016 Essentials - JCKRF-N37P4-C2D82-9YXRT-4M63B





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Converter Windows Server 2019 Evaluation para Full
Upgrade windows Evaluation para Full
dism /online /set-edition:serverxxxxx /productkey:xxxxxxxxxx /accepteula
Chaves públicas para conversão
Windows Server 2019 - Chave de configuração do cliente KMS
Windows Server 2019 Datacenter - WMDGN-G9PQG-XVVXX-R3X43-63DFG
Windows Server 2019 Standard - N69G4-B89J2-4G8F4-WWYCC-J464C
Windows Server 2019 Essentials - WVDHN-86M7X-466P6-VHXV7-YY726
Windows Server 2016 Datacenter - CB7KF-BWN84-R7R2Y-793K2-8XDDG
Windows Server 2016 Standard - WC2BQ-8NRM3-FDDYY-2BFGV-KHKQY
Windows Server 2016 Essentials - JCKRF-N37P4-C2D82-9YXRT-4M63B

Comando para estender a licença:
slmgr.vbs /rearm