Nessus Offline Activation License Already In Use 【EXTENDED】

When you perform an offline activation, you generate a "Challenge Code" from your local Nessus scanner. You then provide this code and your "Activation Code" to the Tenable website to receive a license file (nessus.license).

Open your terminal and run: /opt/nessus/sbin/nessuscli fetch --challenge nessus offline activation license already in use

Once the license is reset on the Tenable side, you need to get a fresh Challenge Code from your offline scanner to ensure you aren't using cached, stale data. When you perform an offline activation, you generate