(Hyper-V or VirtualBox)? How to convert an evaluation to a full version ? Windows Server 2012 R2 | Microsoft Evaluation Center
Downloading the Windows Server 2012 R2 ISO allows you to deploy a mature, enterprise-class platform. Although mainstream support has ended, it remains a robust choice for testing or specialized environments, offering a 180-day evaluation period for assessment. Primary Official Sources Download W2012R2 Server ISO
This is the primary, free, and legal source. You can download a 64-bit ISO for a 180-day evaluation. (Hyper-V or VirtualBox)
Save the ISO file, which is typically around 3-4 GB. Crucial Technical Requirements & Notes Download W2012R2 Server ISO