Confirm the reset. The status will update to show the code is now available for a new installation. 2. Perform the Offline Activation
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Update License Offline (Tenable Nessus 10.12)
On your offline Nessus machine, you need a unique challenge code tied to that specific hardware. /opt/nessus/sbin/nessuscli fetch --challenge
: When you activate Nessus on a system, that system becomes the "active" instance. Subsequent attempts to use that code on another machine will trigger the "already in use" message. How to Resolve the Error nessus offline activation license already in use
A link to download the ( all-2.0.tar.gz ).
Paste your (License Key) into the second box. Click Submit . The portal will now successfully generate two items:
Open your browser, navigate to your local Nessus UI (usually https://localhost:8834 ), and log in. The application will take a few minutes to compile plugins, after which your offline activation error will be fully resolved. Best Practices to Avoid Future License Locks Confirm the reset
Nessus offers both online and offline activation options. Offline activation is particularly useful for Nessus installations that do not have direct internet access. It involves obtaining an activation code from the Nessus website, which is then applied to the Nessus scanner.
If the old scanner is still reachable, you can manually unregister it to free up the license immediately. # /opt/nessus/sbin/nessuscli fix --reset C:\Program Files\Tenable\Nessus\nessuscli.exe fix --reset
The fastest and most effective way to resolve this error is to manually break the link between your activation code and the old hardware profile. Tenable allows primary account contacts to reset their licenses directly. Perform the Offline Activation This public link is
Only the Primary Contact or assigned Product Owner can reset the activation code. If you do not have permission, contact your license administrator. Performing the Offline Activation Again
Closing recommendations (practical)