Q. If I have a Windows 10 KMS key will it activate Windows 10 Enterprise and Windows 10 Enterprise LTSB?
A. Yes. The Windows 10 KMS key (which is actually Windows Server 2012 R2 and Windows 10) will activate all the various branches of Windows 10 for enterprises including current branch (CB), current branch for business (CBB) and long term servicing branch (LTSB).