Mandatory KB3079821 for Windows 7 and Windows server 2008 R2 to support Windows 10.
Your existing KMS server will most probably be good to manage licenses for Windows 10 and Office 2016. In this post, we will covert how to use an already configured KMS server for activation of Windows 10 and Office 2016. The release of Windows 10 KMS activation and Office 2016 activation is no different then previous versions. Since then, each new release of Windows and Office provided a necessary update to KMS server, in order to keep offering activation keys to Windows and Office clients. The KMS server was first introduced with Windows Vista as an easy activation service for IT pros.