Posting this since it’s come up NUMEROUS TIMES.
When you attempt to register a KMS host key and see the following message:
0xc004f015: The Software Licensing Service reported that the license is not installed.
… all this means is that you didn’t install the pre-requisite patch to allow your KMS service host to activate Windows 10 clients. This is documented at:
- SUPPORT: Error 0xC004F015 when you try to activate Windows 10 Enterprise on a Windows Server 2012 R2 KMS host
https://support.microsoft.com/en-us/kb/3086418
To remedy the situation, please install the patch referenced here:
- RELEASE: KMS Server Update for Windows 10
https://kurtsh.com/2015/06/19/release-kms-server-update-for-windows-10/
kurtsh
Kurt Shintaku's Blog 