Stop a Running Scan
When you stop a scan, Nessus terminates all tasks for the scan and categorizes the scan as canceled. The Nessus scan results associated with the scan reflect only the completed tasks. You cannot stop individual tasks, only the scan as a whole.
To stop a running scan:
In the top navigation bar, click Scans.
The My Scans page appears.
In the scans table, in the row of the scan you want to stop, click the button.
The Stop Scan dialog box appears.
To stop the scan, click Stop.
Nessus begins terminating the scan processes.