How can I restore the DHCP database?

A. Perform one of the following:

  1. When the DHCP Server service starts, if an error is detected in the database it will automatically restore the backup version
  2. Edit the registry and set HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DHCPServer\Parameters\RestoreFlag to 1, restart the DHCP Server service, this will restore the backed up version and set RestoreFlag back to the default 0
  3. Stop the DHCP Server service, copy the files from %SystemRoot%\System32\Dhcp\Backup\Jet to %SystemRoot%\System32\Dhcp and then start the DHCP Server service.

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