Can paid version of Avast scan all the new software if it has any hidden virus or malware before installation??
Depends on your definition of 'malware'.
For me, an install that defaults to hijacking my browser or search engine to something else is 'malware'.
And The AV tools do not catch that.
my "definition" is anything that is not good for the user, yes, hijacking my browser to somewher is of course malware for 99% of people in my opinion
any suggestion of freeware against malware??
Well..the issue is that during the install, there is a checkbox to allow the install to change your browser , search engine, or other things.
This is checked Yes by default.
So...by doing this install you have accepted that change.
Solution? Don't just click through the defaults during an install.
Select Custom or Advanced, and read what it says it is doing.
If the particular application does not allow you to deselect that....Cancel. Find some other application that does not do this.
There is rarely a single application that is both the only one that performs that function, and also includes crapware.
I always find the best place to get an install of something is direct from whoever made it, or the publisher.
Any actual virus or known 'malware' is generally caught by your AV application.