This event occurs when a machine requests an IP from a DHCP Controller which is refused.
This most commonly occurs when a portable machine is used on multiple networks, or when the DHCP pool has been recently changed.
denied by the DHCP server 192.168.0.1 (The DHCP Server sent a DHCPNACK message).
denied by the DHCP server 10.167.0.0 (The DHCP Server sent a DHCPNACK message).
denied by the DHCP server x.x.x.x (The DHCP Server sent a DHCPNACK message).
denied by the DHCP server 1.1.1.1 (The DHCP Server sent a DHCPNACK message).
denied by the DHCP server 10.0.0.30 (The DHCP Server sent a DHCPNACK message).
Usually results from switching from DHCP server to another.
I agree also. Open a command prompt and type IPCONFIG /FLUSHDNS then hit enter. Reboot and see if you get the same event.
flush DNS and then reboot. That should resolve this one.
You can also release the DHCP on the workstation and DHCP server.