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DHCP service stops when it encounters another DHCP server (SBS only)

DHCP service on the SBS server stopped running. Checking the event viewer showed that it was stopped because it found a duplicate DHCP server on the network. In SBS servers, the DHCP services default behavior is to shut down should it encounter another DHCP server (this is not the default behavior for non-SBS servers).

The mechanism that shuts down the DHCP service is called “DHCP Rogue Detection” and can be disabled by creating a key here:


The key should be a DWORD named: DisableRogueDetection
It should be set to a value of 1