@WinTechie
Hi,
Yes, server 2019 KMS host key can be used to activate windows 10 clients.
You can clearly understand the activated objects through the following list:
https://learn.microsoft.com/en-us/windows-server/get-started-19/activation-19
There is no need to add separate KMS keys , one KMS Host key (CSVLKs) should be installed on the AD forest, and client keys (GVLKs) should be installed on the client products
KMS client setup keys(GVLKs):
https://learn.microsoft.com/en-us/windows-server/get-started/kmsclientkeys
For more details about the process, you can refer to :
https://techcommunity.microsoft.com/t5/core-infrastructure-and-security/active-directory-based-activation-vs-key-management-services/ba-p/256016
Hope above information can help you.
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