1

I have a little different question. If Avast blocks a virus will there always be some notification, or is it sometimes done silently? The reason I ask is that I am a long time user and have never had an instance of a mention of a virus on either of the machines on which I have it installed. Does this mean that I would have been virus free during this period even if I did not have Avast installed?

2

It is possible to have not been infected depending on your internet surfing habits. If you have not “tinkered” with the default settings in avast, you should get a notification. You might also look in the virus chest to see if anything is listed in the Infected section.

3

If you do not change avast settings, you will receive a virus alert message each time.
Most probably you’re virus free since you’ve installed avast.
Also, the infections detected are logged into avast logs. You can take a look into them.