: Verify the details and click "Yes" . Your code is now "free" and ready for a new installation. 2. Generate a New Challenge Code
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.
: An activation code can only be registered on a single host at any given time.
[Related search suggestions will be provided.] nessus offline activation license already in use
Delete nessus.license in C:\ProgramData\Tenable\Nessus\conf\ Linux: Delete nessus.license in /opt/nessus/etc/nessus/ Start the Nessus Service : Windows: net start "Tenable Nessus" Linux: service nessusd start
When you activate Nessus online, the scanner phones home to Tenable, says "Here is my challenge code," and Tenable returns a digital signature that unlocks the software. It ties that specific install to your account.
Locate the specific activation code and click the or "X" icon next to it. Confirm the reset; the status should change to available. 2. Deactivate the Old Host (If Accessible) : Verify the details and click "Yes"
Troubleshooting Nessus Offline Activation: How to Fix the "License Already in Use" Error
/opt/nessus/sbin/nessuscli fetch --challenge
You are migrating Nessus to a new server or rebuilding an existing one without first resetting or deactivating the license from the old instance. Generate a New Challenge Code This public link
: If moving to a new server, always deactivate the license on the old host first using nessuscli fetch --deactivate (if the old host is still accessible) to avoid needing a portal reset.
: Consider migrating to Tenable Core (the appliance version), which handles offline states more gracefully during system updates. If you want to troubleshoot further, tell me: What Operating System is your offline scanner running? Are you using Nessus Professional or Nessus Essentials ? Is this scanner a virtual machine or physical hardware ?
The "Nessus Offline Activation License Already in Use" error typically occurs when there's a mismatch or conflict with the license information. Here are some common causes:
sudo /opt/nessus/sbin/nessuscli update /path/to/all-2.0.tar.gz Use code with caution. 3. Restart and Verify
Click on the My Products tab at the top of the page.