/opt/nessus/sbin/nessuscli fetch --register-offline nessus.license Use code with caution. Step 5: Update Your Plugins
licenses are unique to a specific "challenge code" generated by the host machine, you cannot simply reuse the same activation code on a new system without first unlinking it from the old one. Why This Error Occurs
Locate the specific activation code and click the or X icon. nessus offline activation license already in use
Fixing the "Nessus Offline Activation License Already in Use" Error
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. /opt/nessus/sbin/nessuscli fetch --register-offline nessus
If deactivation is impossible (e.g., support is slow and the old server is gone), you can attempt to force Tenable to accept the new hardware using the --set-offline parameter.
A clean reinstallation may remove residual activation files that interfere with registration. Fixing the "Nessus Offline Activation License Already in
The "Activation Code already in use" error occurs because a Tenable Nessus activation code can only be bound to a single host at a time. If you are performing an offline activation and encounter this, you must first reset the code in the Tenable portal to unbind it from its previous installation before it can be used on a new one. Primary Solution: Reset Activation Code
Once the code is reset, you can proceed with the standard offline registration process: Generate a New Challenge Code : On your offline machine, run the command nessuscli fetch --challenge to get a fresh, unique code. Generate License File : On a machine with internet access, visit the Nessus Offline Registration page
Fixing the "Nessus Offline Activation License Already in Use" Error