Although my Laptop is permanently connected to a wifi network the automatic virus definition updates are not working. But the streaming updates are getting. When I checked yesterday my virus database were 3 days older even if my laptop is connected to the internet. And I manually updated the database. and today the same happens. The new virus database from avast website named as 17.11.2014 - 141117-1 but my database is older. A screen shot is attached for the update section. from there last streaming update was received is shown.