There are 2 possible questions you're asking. I will assume one of them is:
If we enter the new WS2022 KMS key on our recent KMS Server, will this activate a (client) server running WS2012R2?
There are 2 possible questions you're asking. I will assume one of them is:
If we enter the new WS2022 KMS key on our recent KMS Server, will this activate a (client) server running WS2012R2?