Enterprise question.
On the face of it, this should have a a simple answer. Obviously the Windows 2010 KMS Key for my company right?
Only I don't think so, because using a Windows client (which Windows 10 is) KMS key on the KMS host only permits that version and down levelWindows client KMS activations for Vista and Windows 7/8/8.1 - No server products. Certainly in the past this has been the case.
In the past this hasn't been an issue because the server and client product have been released at the same time and you would just install the latest Windows server product KMS key on the KMS host. Once installed, this would activate both server and client OSs contacting the KMS host. For example my server currently has a Server 2012-R2_VOLUME_KMS key installed, which activates client and server versions right back to Windows 2008\Vista.
So my question is, what KMS server key am i supposed to use on the KMS server, to enable both Windows 10 activations and Windows Server 2008r2\2012r2 activations in the 6-9 months before MS release and publish a KMS key for Windows Server 2016?