You mentioned that Win 10 IoT Enterprise (1809) machines were activated before deployment, what about then, do they still activated after deployment?
You know, KMS activation need clients contact to KMS server every 180 days, if this Win 10 IoT Enterprise (1809) machine use KMS activation and cannot contact KMS host beyond 180 days, its activation state will be lost.
Besides, major hardware change will also lead to activation state change.
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