Windows在过去的几年中发生了很大的变化，几年来一直困扰着系统管理员的事情现在已经荡然无存。
Microsoft现在允许无需重新安装即可将已安装的Windows Server 2015 Standard转换为Datacenter。

为此，您需要掌握Windows Server 2015 Datacenter产品密钥。

1.以提升的权限打开命令提示符

2.输入以下命令：

dism /online /Set-Edition:ServerDatacenter /ProductKey:Datacenter-Product-Key /AcceptEula

范例：

dism /online /Set-Edition:ServerDatacenter /ProductKey:00000-00000-00000-00000-00000 /AcceptEula

输出示例：

C:\Windows\system32>dism /online /Set-Edition:ServerDatacenter /ProductKey:00000-00000-00000-00000-00000 /AcceptEula

Deployment Image Servicing and Management tool
Version: 10.0.14393.0

Image Version: 10.0.14393.0

Starting to update components...
Starting to install product key...
Finished installing product key.

Removing package Microsoft-Windows-ServerStandardEdition~31bf3856ad364e45~amd64~~10.0.14393.0
[==========================100.0%==========================]
Finished updating components.

Starting to apply edition-specific settings...
Restart Windows to complete this operation.
Do you want to restart the computer now? (Y/N) y