: "C:\Program Files\Tenable\Nessus\nessuscli.exe" fetch --challenge
After restarting Nessus, log into the web interface (usually https://your-scanner:8834 ). download nessusupdateplugins all20targz new
Get-FileHash -Path C:\Downloads\nessusupdateplugins_all20.tar.gz -Algorithm SHA256
sha256sum nessusupdateplugins_all20.tar.gz
/opt/nessus/sbin/nessuscli update /var/local/nessusupdateplugins_all20.tar.gz systemctl restart nessusd The Ultimate Guide to Downloading and Installing Nessus