Issue

Windows Small Business Server 2008 stopped issuing IP addresses. DHCP service not running. After staring DHCP service manually, it crashes after couple of seconds.

Following error is logged in Windows Application Logs:

Source: Application Error
Event ID: 1000
Level: Error
Description:
Faulting application svchost.exe_DHCPServer, version 6.0.6001.18000, time stamp 0x47919281, faulting module dhcpssvc.dll, version 6.0.6002.18005, time stamp 0x49e090fc, exception code 0xc0000005, fault offset 0x0000000000045220, process id 0x3124, application start time 0x01cd1716e494bff2.

Additionally, Windows System Logs recorded following:

Source: Service Control Manager Eventlog Provider
Event ID: 7031
Level: Error
Description:
The DHCP Server service terminated unexpectedly.  It has done this <X> time(s).  The following corrective action will be taken in 300000 milliseconds: Restart the service.

Source: Service Control Manager Eventlog Provider
Event ID: 7034
Level: Error
Description:
The DHCP Server service terminated unexpectedly.  It has done this <X> time(s).

Solution

Problem was caused by a Avaya Manager software serving bootp (and possibly tftp) requests. Apparently phone company was working on a phone system over the weekend and forgot to switch this off. Closing Avaya Manager software resolved the problem.