When installing Tenable.SC it asks for a activation key and installation continues. Then you install your Nessus scanner and during the install point it to the SC and it shows that its license is managed by Tenable.SC. Now that you have everything installed and up and running right? Wrong..
Updates for the plugins are not working yet, as for that you need to enter a separate license key. You need to log in to your Tenable Community account go to Your products and find the Tenable.sc activation key.
You need to insert that key into your Tenable.SC when logged into it as and administrator (not the scanning account). You need to navigate in the menu to System > Configuration > License and click on “Nessus Scanner” and paste the activation key you found on the Support site into there and press Register. After that your Tenable.SC and Nessus will be able to update their plugins and feeds.
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