Open an administrator command prompt, navigate to the Nessus installation directory (typically C:\Program Files\Tenable\Nessus\ ), and run:
A text block containing your new , along with a link to download it as a nessus.license file. Download this file to your machine.
Select your product category on the left side (e.g., Nessus Professional or Nessus Expert ). nessus offline activation license already in use full
sudo systemctl start nessusd
When you attempt an offline activation, the Tenable registration portal checks the status of your activation code. If the portal sees the code is already bound to a machine identifier, it rejects the new offline request. Step 1: Reset the License in the Tenable Community Portal Open an administrator command prompt, navigate to the
"C:\Program Files\Tenable\Nessus\nessuscli.exe" fetch --challenge Use code with caution. : Run via terminal: /Library/Nessus/run/sbin/nessuscli fetch --challenge Use code with caution.
Regular backups protect against data loss if an activation attempt fails and requires a clean reinstallation. sudo systemctl start nessusd When you attempt an
Log in using the credentials of the account or Product Owner . (Note: View-Only users cannot reset codes.) Click on My Products in the upper-right corner. Select your product type from the left menu panel. Find the target license and click Manage Product . Click the Reset Product Activation link.
: You accidentally attempted to reuse a single-instance Nessus Professional license across multiple active platforms. Step-by-Step Resolution Guide
Restart Nessus. In some cases, the license will become valid again.
