Download W2012r2 Server Iso -

Save the ISO file, which is typically around 3-4 GB. Crucial Technical Requirements & Notes

You will need to sign in with a Microsoft account and fill out registration details. Download W2012R2 Server ISO

Choose your preferred language and select the 64-bit ISO option. Save the ISO file, which is typically around 3-4 GB

This is the primary, free, and legal source. You can download a 64-bit ISO for a 180-day evaluation. Save the ISO file

Go to the official Windows Server 2012 R2 download page.

During setup, you can choose between Server Core (headless, recommended) or Server with a GUI (full desktop experience).