Configure these settings only if you want to monitor DHCP changes.
NOTE: The DHCP role is required to view and enable the DHCP-Operational log.
On the computer where DHCP server role is installed, navigate to Start → Windows Administrative Tools (Windows Server 2016) or Administrative Tools (Windows 2012 R2 and below) → Event Viewer.
- Navigate to Event Viewer tree → Applications and Services Logs → Microsoft → Windows and expand the DHCP-Server node.
Right-click the Operational log and select Properties.
Make sure Enable logging is enabled.
- Set Maximum log size to 4 GB.
- Make sure Do not overwrite events (Clear logs manually) is cleared. If selected, change the retention method to Overwrite events as needed (oldest events first).