Hi,
The error code 0xc004F050 indicates that the KMS key doesn’t match the Windows edition.
Therefore, if you would like to install a Windows Server 2012 R2 KMS Host, you need a Windows Server 2012 R2 KMS Host Key.
Otherwise, you need to setup a Windows Server 2012 KMS Host or Windows Server 2008 R2 KMS Host with
this update installed to match your KMS Host Key.
Hope this helps.
Jeremy Wu
TechNet Community Support
