On a computer that is running a volume-licensed installation of Windows 10 Enterprise, you cannot activate Windows if you are using a Customer Support Volume License Key (CSLVK). Additionally, the following error entry is logged in the event log as Event ID 12290:
0xC004F015Error details0xc004f042 - SL_E_VL_KEY_MANAGEMENT_SERVICE_ID_MISMATCHThe Software Licensing Service determined that the specified Key Management Service (KMS) cannot be used.
This problem can occur if you use the Windows 10 KMS host product key in a Windows Server 2012 R2 and Windows Server 2008 R2 environment. You must use the updated WS2012R2+Win10 KMS host product key if the following conditions are true.
Client CSVLKs are installed on client computers.
Server CSVLKs are installed on server computers.
To activate Windows 10 Enterprise in a Windows Server 2012 R2 environment, the following prerequisites apply:
You must have Windows Server 2012 R2 with the Volume Activation role installed.