Activating Windows 10 on Windows Server 2008 R2, Windows Server 2012 and 2012 R2 KMS hosts.

Applies to:
Windows Server 2012 R2
Windows Server 2012

Windows Server 2008 R2
Windows 7

Note:  Windows 10 activation is not supported on:  
•Windows Server 2008 KMS hosts
•Windows Vista KMS hosts
•Windows Server 2003 KMS hosts

Date: 08/05/2015

Updated 9/16/2015

Issue:

====

3086418 Error 0xC004F015 while activating Windows 10 Enterprise using Windows Server 2012 R2 KMS Host
https://support.microsoft.com/kb/3086418

Solution:
=========
3058168 Update that enables Windows 8.1 and Windows 8 KMS hosts to activate a later version of Windows
https://support.microsoft.com/kb/3058168

or

3079821 Update that enables Windows 7 and Windows Server 2008 R2 KMS hosts to activate Windows 10

https://support.microsoft.com/kb/3079821

which points to:

Update for Windows 7 for x64-based Systems (KB3079821)

http://www.microsoft.com/en-us/download/details.aspx?id=49057