Run Nessuscli Fetch --challenge On Your Nessusd Server And Copy The Result Below -

"C:\Program Files\Tenable\Nessus\nessuscli.exe" fetch --challenge macOS: /Library/Nessus/run/sbin/nessuscli fetch --challenge Performance Review Nessuscli (Tenable Nessus 10.11)

A URL to download the latest (e.g., all-2.0.tar.gz ). "C:\Program Files\Tenable\Nessus\nessuscli

This command might require administrative or superuser privileges. If you're on a Unix-like system (Linux, macOS), you might need to use sudo before the command: "C:\Program Files\Tenable\Nessus\nessuscli

To activate a Nessus instance that lacks direct internet access. "C:\Program Files\Tenable\Nessus\nessuscli

To generate the code, you must have administrative privileges on the server where Nessus is installed.