<div>
It seems to show me the VOLUME_KMS_2012-R2_WIN10 channel in my output too, and it shows the proper Partial Product Key. <br />
I added it through Server Manager's Tools &gt;&nbsp;Volume Activation Tools. <br />
<br />
However, in the VAMT GUI tool, it does not show the key nor will it let me add it. <br />
I tried adding it in VAMT that comes with 2012 R2, then tried adding the VAMT tool from the Windows 10 ADK, but still the same error.<br />
<br />
<a href="https://filedb.experts-exchange.com/incoming/2015/08_w34/930548/unable-to-verify.png" target="_blank" title="unable-to-verify.png (6 KB)"><img alt="unable-to-verify.png" class="file-block lazyload" style="max-width: 501px;" data-src="https://filedb.experts-exchange.com/incoming/2015/08_w34/930548/unable-to-verify.png" /></a>
</div>


It seems to show me the VOLUME_KMS_2012-R2_WIN10 channel in my output too, and it shows the proper Partial Product Key.
I added it through Server Manager's Tools > Volume Activation Tools.

However, in the VAMT GUI tool, it does not show the key nor will it let me add it.
I tried adding it in VAMT that comes with 2012 R2, then tried adding the VAMT tool from the Windows 10 ADK, but still the same error.

unable-to-verify.pnghttps://filedb.experts-exchange.com/incoming/2015/08_w34/930548/unable-to-verify.png

unable-to-verify.png

<div>
<div class="content wysiwyg-content">
As for the pre-req update, I understand I'll need to install KB3058168 (its pre-req KB2919355 is already installed).<br />
But in my Product Keys section in Relationship Summary, I see a Product for &quot;Windows 10 KMS&quot; as well as the product &quot;Windows Srv 2012R2 DataCtr/Std KMS for Windows 10&quot;.<br />
Which should I use? Both are different keys.<br />
My KMS host is a 2012 R2 server. And I have product keys currently for 2012 R2 Std Data, Office 2010 and Office 2013.
</div>
</div>


As for the pre-req update, I understand I'll need to install KB3058168 (its pre-req KB2919355 is already installed).
But in my Product Keys section in Relationship Summary, I see a Product for "Windows 10 KMS" as well as the product "Windows Srv 2012R2 DataCtr/Std KMS for Windows 10".
Which should I use? Both are different keys.
My KMS host is a 2012 R2 server. And I have product keys currently for 2012 R2 Std Data, Office 2010 and Office 2013.

2012 R2 KMS Host - activating Windows 10?

Windows Server 2012 is the server version of Windows 8 and the successor to Windows Server 2008 R2. Windows Server 2012 is the first version of Windows Server to have no support for Itanium-based computers since Windows NT 4.0. Windows Server 2012, now in its second release (Windows Server 2012 Release 2) includes Foundation, Essentials, Standard and Datacenter, and does not support IA-32 or IA-64 processors.

Windows Server 2012

Windows 10 is a personal computer operating system featuring the "universal application architecture" (UAP); apps can be designed to run across multiple devices with nearly identical code, including PCs, tablets, smartphones, embedded systems, Xbox One, Surface Hub and HoloLens. Windows 10 also includes a virtual desktop system, a window and desktop management feature called Task View, the Microsoft Edge web browser, support for fingerprint and face recognition login, voice-based search (Cortana), new security features for enterprise environments, and DirectX 12 and WDDM 2.0 to improve the operating system's graphics capabilities for games.