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Event ID: 20097 Source: DHCP-Server

DHCP Services were denied to machine with hardware address <MAC address>, hardware type 1 and FQDN/Hostname <Machine Name> because it did not match any entry in the Allow List.
Event logged in the Microsoft-Windows-DHCP Server Events/FilterNotifications when MAC filters is enabled in the IPV4 Properties. Add the needed MAC address or do not enable the MAC filters. See M2782375 and TF521761 (Enable and Configure MAC Address Filtering).

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