1. Generate a challenge code by running the following command:
C:\Program Files\Tenable\Nessus>nessus-fetch --challenge

2. Go to and paste the challenge code, as well as the Activation Code into the appropriate text boxes.

3. After entering the challenge and activation code, the website will produce a link to download the latest Nessus plugin feed, as well as a link to download nessus-fetch.rc at the bottom of the screen. Be sure to save this link as it will be needed each time you want to update your plugins.

4. Copy the nessus-fetch.rc to the following directory: C:\Program Files\Tenable\Nessus\conf

This will only need to be copied this one time, and not each time you download the plugins.

5. To register your scanner in offline mode, run the following command:
C:\Program Files\Tenable\Nessus>nessus-fetch --register-offline C:\Program Files\Tenable\Nessus\conf\nessus-fetch.rc

(Syntax is nessus-fetch --register-offline <file.rc> )

6. Next, copy the all-2.0.tar.gz file downloaded from the website to the C:\Program Files\Tenable\Nessus directory, and run the following command:
C:\Program Files\Tenable\Nessus>nessus-update-plugins all-2.0.tar.gz

7. Once the plugins are installed please rebuild plugins database:
C:\Program Files\Tenable\Nessus\nessusd -R

8. Finally, restart the Nessus Server

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