The keyword summarizes exactly this scenario: the license is valid but cannot be applied because all available seats are taken.

With your reset activation code and your new challenge code ready, you can now generate a fresh license key file ( nessus.license ).

You must release the activation code from its old hardware profile before you can activate it on a new machine. You do this through your account portal. Open a web browser on a device with internet access.

The administrator injects this Reclamation Token back into the offline Nessus scanner via the UI or command line. Nessus validates the cryptographic signature of the token against its local trusted keys.

On a machine that does have internet access, navigate to the . Paste your new Challenge Code into the first box. Paste your Activation Code into the second box. Click Submit . The page will provide two critical items: