You DHCP server claim there is no free IP to deliver.
This issue is fixed on 3.06.200174 version or above.
1) Disable fixed addresses from database.
Before 3.06.200174 all new computer is automatically fixed from Artica Database.
- On the DHCP configuration, disable the “Fix resolved hosts IP addresses”.
- Click on Save (even it is already disabled)
2) Purge leases
- Click on the “Leases” tab
- Click on “Empty” button on the head table.
This will purge all already leases entries.