Windows Server 2012 R2 Standard Build 9600 Product Key Activation ((link)) · Instant Download

DISM /Online /Set-Edition:ServerStandard /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX /AcceptEula

The activation remains valid for 180 days and automatically renews every 7 days. Multiple Activation Key (MAK)

This is the qac popup content.