2. Go to Tools > Anti-Virus Definition.
> Update Settings – Select the Automatically update in checkbox and enter a value in hours.
> Check for Update Settings – The Last update check date/time and Next update check date/time is displayed. Click Update Now to update the virus definitions immediately. The Update Status is displayed.
> Cache Server Details – The Current Version and Last update check date/time is displayed. Select the Automatically update the Cache Server checkbox if you want to automatically download and update the Cache Server with the latest definitions. Click Update Now to update the cache server immediately.
4. Click OK.