Re: Problem with Anti-Virus
AV is rubbish:
User education is more effective.
It regularly trashes OSes.
It slows machines
It has wrong default settings
Never up to date.
Gives false confidence, so users don't bother learning about basics.
Disable uPNP on router and PC, always use EXTERNAL firewall, turn off SSSD and all other stupid default services on Windows. No remote content in email. Use NoScript and whitelist and blacklist on each site you use (once per visit is usually enough). Don't install stupid toolbars. Always use custom install and untick extras. Don't download "free" versions of pay only software. Only use sensible sources for SW and codecs.
Disable Autorun on all devices.
All far more use than ANY AV.
I've been saying this for 25 years.