is a standalone, free product offered by Microsoft that does not require an activation key. It provides the same hypervisor technology as the full Windows Server 2012 R2 but without a graphical user interface (GUI). 4. How to Find Your Existing License Key

Most evaluation ISOs have an embedded key and will activate automatically upon connecting to the internet. Trial Duration: You can use the full features for 180 days. Re-arming the Trial: If your trial expires, you can often "re-arm" it by running slmgr.vbs /rearm in an elevated Command Prompt to extend the period. 3. Microsoft Hyper-V Server 2012 R2 If you only need a platform for virtualization, Hyper-V Server 2012 R2

If you have already purchased a license or have an OEM machine (like Dell or HP) and need to retrieve your key, try these methods: Windows Server 2012 R2, how many licenses included? 9 Jun 2017 —