Does Avast scan all files after install?

Avast Free Antivirus / Premium Security
1

Does Avast scan all files after install?
I install Avast on my PC and look like Avast try to scan all files in all drives which I don’t want Avast do it.

Anyone can tell me that Avast try to scan all files in all drives?
Can I limit Avast to scan only file I or and download, or the virus that is in active operation?

2

Hi lifemirror,

Every new fresh install of avast! starts with a preliminary scan to ensure your system is not infected. It scans key areas limited basically to windows system files and is not an extensive scan at all. It usually finishes this scan in around one minute.

The only scan available that does what you are talking about is the full scan, and that is user-initiated.

https://en.wikipedia.org/wiki/Antivirus_software#Real-time_protection Please read what real-time protection is.

What version of avast installed?

3

Hi mchain,

I install free version to test the program before make decision.
But it scan all drive after installed, I dont want it do that but I dont know how to stop it.

Thanks,
Lifemirror