Microsoft Windows Server 2012 DataCenter R2 — installation

Redeeming a Windows Server 2012 R2 key is really simple, just follow these steps:

Download Windows Server HERE,

Change Evaluation to Regular.

For Windows Server Datacenter, please use the following command:

DISM /Online /Set-Edition:ServerDatacenter /ProductKey:XXXX-XXXX-XXXXX-XXXXX-XXXXX /AcceptEULA

For Windows Server Standard / Essentials, use this command:

DISM /Online /Set-Edition:ServerStandard /ProductKey:XXXX-XXXX-XXXXX-XXXXX-XXXXX /AcceptEULA

Proceed with activation.