date If incorrect, set it or enable NTP:
hostname Check /etc/hosts to ensure the hostname resolves to a local IP (e.g., 127.0.1.1 eve-ng-pro ). eve license host error (97)
timedatectl set-ntp true Make sure the server’s hostname matches what is in the license file. date If incorrect, set it or enable NTP:
/opt/unetlab/wrapper/install_license -f /path/to/new.lic Rebuild the CA certificate bundle: date If incorrect
Contact your EVE-NG license provider to obtain a new license file. Then, as root :
update-ca-certificates --fresh systemctl restart apache2
Ensure your EVE-NG server has the correct date and time. Run: