The default KMS keys used for volume licensing editions of Windows 8.1 and Windows Server 2012 R2 has been updated.

Operating system edition KMS Client Setup Key

Windows 8.1 Professional


Windows 8.1 Professional N


Windows 8.1 Enterprise


Windows 8.1 Enterprise N


Windows Server 2012 R2 Server Standard


Windows Server 2012 R2 Datacenter


Windows Server 2012 R2 Essentials


With Windows Server 2012 R2 you can scale to run your most important workloads with robust recovery options. You’ll achieve value quickly with a wide range of cost-effective, high-performance storage options and simplified delivery of multi-tenant IT services. You can build, deploy, operate, and monitor applications on premises and in the cloud. Server licensing is all about the physical hardware of the server and purely for auditing purposes. The product key you receive will be used to MAK activate the physical Windows Server 2012 standard server and also for activating up to two Server 2012 standard VMs on the physical server (hyper-v host).

Windows Server (54) About Author Satheshwaran Manoharan is an Microsoft Office Server and Services MVP, Publisher of Specialized in Office365 / Microsoft Exchange / Virtualization, Sathesh is an Messaging Expert supporting/Designing/Deploying many medium size businesses to large enterprises when it comes to Corporate. If you install a corporate version of Windows 8 or Windows Server 2012 that uses Volume Licensing, you won’t be asked for a Product Key during installation. However, in order to activate Windows you need to enter your Product Key at some point after installation. In this article. Applies to: Windows Server 2019, Windows Server Semi-Annual Channel, Windows Server 2016, Windows 10. Computers that are running volume licensed editions of Windows Server, Windows 10, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Server 2008 R2, Windows Vista, and Windows Server 2008 are, by default, KMS clients with no additional.

They can be used as product key when installing the OS in Enter the product key to activate windows:

And the keys are used by VAMT from the ADK, of course activation will only work if a KMS server is available.

When you choose to automatically install a KMS client key (GVLK), VAMT will use these KMS keys:

Windows 2012 R2 Product Key

Server changed to KMS key and as shown in partial key the last part is matching the KMS key:

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