将以下命令 粘贴至 Windows PowerShell 回车，等待进度条滚完重启，别问为什么，问就是升级！

将Windows Server 2019评估转换为Windows Server 2019标准：

dism /online /set-edition:ServerStandard /productkey: N69G4-B89J2-4G8F4-WWYCC-J464C /accepteula

将Windows Server 2019评估转换为Windows Server 2019 Datacenter版本：

dism /online /set-edition:ServerDatacenter /productkey:WMDGN-G9PQG-XVVXX-R3X43-63DFG /accepteula

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OS Edition GVLK Key
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 10 Enterprise LTSC 2019 M7XTQ-FN8P6-TTKYV-9D4CC-J462D
Windows 10 Enterprise N LTSC 2019 92NFX-8DJQP-P6BBQ-THF9C-7CG2H