| Event Id | 1011 |
| Source | DHCP |
| Description | The DHCP service issued a NACK (negative acknowledgement message) to the client, %2, for the address, %1. |
| Event Information | Cause: This NACK happens when you have multiple DHCP servers and one of the DHCP servers with Windows NT 4.0 Service Pack 2 runs out of available addresses. If the server gives out all the available addresses, and then receives a DHCPREQUEST from the offer of another server on the same segment, it will send a NACK in response to the request. Resolution: Verify the configuration on the both servers. |
| Reference Links |
Catch threats immediately
We work side-by-side with you to rapidly detect cyberthreats
and thwart attacks before they cause damage.