AV question

[Newt]

Fact - AV software that is set to autoscan all inbound stuff will slow your PC some. No way to avoid it.

 

Two antivirus apps trying to scan at the same time (as they certainly will) consume tremendous resources slowing your computer down to snail's pace and maybe causing it to hang/freeze frequently, sometimes even at startup itself.

 

Two antivirus apps usually will detect each other's activity, and consider their behavior virus-like. This may result in one or both of the them trying to neutralize the other by attempting to quarantine or delete each others core files. This may corrupt the AV apps, or render them useless, and probably even cause a computer crash.

 

If two antivirus apps try to scan a file at the same time, there may be a conflict that will corrupt the file or prevent it from ever opening or running normally.

 

For sure a case where two is not better than one.

 

Note that if you do want a 2nd AV app as a backup, you are safe enough if one is active and protecting you while the other is disabled. You just need to make sure that you disable A before starting B and that you update B before scanning with it since you can't use any autoupdate feature on an AV app that is disabled.