Address Manager and DNS/DHCP Server virtual machine licenses eventually expire and must be renewed. Address Manager and DNS/DHCP Server virtual machines provide Administration Console commands that you can use to view and update your license keys.
A virtual machine license includes a grace period of 30 days after its formal expiry date. During this period, a warning message appears in the Administration Console every 10 minutes to remind you that your license has expired. If you don't renew your license before the grace period ends, Address Manager and DNS/DHCP Server prevent the deployment of data, but services don't stop.