From the main console, click on “Virus & Spyware Controls”.
Click on “Protection Against Virus and Spyware” then click the “Settings” link. A new box will appear.
Make sure the box next to “Activate Real-time Protection” is checked.
Under “Check for the following threats,” check each box for the items that you need to be checked for threats.
Under “Do you want to receive warning about all viruses and spyware found?” select “yes” or “no” depending on your personal needs.
When done, click OK.