I’m new in this forum so I don’t know if this topic was yet treated in the past. Also excuse me for my pitiful English !
Well, here is my problem :
Since I had problems with Norton 2005 last year, the professional who repaiered my computer, after having had a strong virus, adviced to me Avira AntiVir (the free version). Then, by MSN, a friend spoke to me about the free version of Avast! Antivirus that I begun to use with AntiVir.
Everything was OK and I could use both antiviruses in the same time until last month, when I have been infected by the Trojan Horse TR/Virut.A.2. . Both antiviruses told me for few times that this one was deleted, but everyday the Trojan Horse was active !
Then I downloaded Ewido Anti-Malware, adviced to me on a forum. The problem is that Ewido locked Avast! for a month (even if I removed Ewido after two weeks) and I even couldn’t remove the locked version of Avast! from my computer for reinstaling it ! So I reinstalled Avast! yesterday without having deleted the locked version.
And my problem now is the following one :
My resident protection (“protection résidente”) of Avast! Antivirus is still locked ! I wonder, because before to be infected by the Trojan Horse, Avast! and AntiVir worked together well !!! So what happens now ???
Running two resident AVs isn’t recommended there is too much chance of a conflict that could leave you vulnerable or lock your system.
AntiVir (latest version) and avast can’t work together without some serious tweaking. After a reboot avast will detect the presence of antivir and may disable some of the elements of avast to avoid this conflict.
When a virus is detected the AV detecting it tries to lock it to avoid harm, however if you have a second on-access resident AV it too wants to get in on the act and will also be trying to lock files, etc. So you have a fight between the AVs which can cause lock-ups, you have to chose which you want to use an uninstall AntiVir ;D Then you could use an on-demand AV like BitDefender as a back-up scanner or use an on-line one as back-up.
Thank you very much, DavidR, for your answer
I get it now !!! Indeed AntiVir was updated when Avast! was locked in my computer ! So, of course, I guess now I have the latest version…
I could remove AntiVir, but my Windows XP took it as my first antivirus ! So if I remove it, being a newbie in networking, I’m affraid to make a big disaster !
Are you sure there is not an easy solution for making that AntiVir accept Avast! like it was before ?
Or if not, how to do for that my Windows XP take Avast! as my antivirus instead of AntiVir ?
If you remove antivir and reboot, hopefully, avast resident scanner won’t be locked and second XP should recognise it as the resident AV.
You may need to uninstall, reboot, install, reboot to ensure avast is properly installed.
It would probably be best to download the latest version of avast and save it to your HDD, somewhere you can find it again. Use that when you reinstall.
The legacy drivers (HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_ etc. etc.) and windows registry keys must be removed… or they will (could) be detected before avast ones
