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#1
I assume you want network activation, you will have to enter the Client KMS key in "change key" settings... Windows will find the server (if it's configured properly)
You have a default retail key and Windows goes looking in that direction - you need to re-direct it to your LAN with the correct key.
If you had installed from a VL distribution, this would not have been a problem, as the default VL key gets installed.