why cannot install two different antivirus software in the same machine?

why cannot install two different antivirus software in the same machine?
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Subject Author Date
why cannot install two different antivirus software in the same machine? javacc2@gmail.com 01-24-2006
Posted by Weatherlawyer on January 26, 2006, 5:46 am
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Malke wrote:
> javacc2@gmail.com wrote:
>
> > I have Mcafee antivirus software installed in my machine, and I tried
> > to install Norton antivirus software, but it pops up an error message
> > "Norton AntiVirus has detected a conflicting anti-virus.."

> Sometimes you *can* install two separate antivirus programs, although
> you should not *run* two antivirus programs at the same time.

But why would you want to? Once a product has your confidence, you are
capable of learning how not to get it infected. It is better to
excersize and wear a tee shirt than to slouch in two coats.

I would like the opportunity one day to take XP out for a spin and
really put it through its paces without stepping in dogczd all the
time. Wouldn't that be nice.

But the OP's question has not been answered except as some sort of
conspiracy on the capitalist's side. As if the people who keep
Microsoft up and running ever get paid by them. (OK they gave Patrick
Kollah, the owner of SpyBot a copy of Windows once. That must have cost
them maybe as much as 2 cents to do. I bet the postage cost more.)

For a firm to make money producing AVware they have to be on the ball
at all times and get the right answers quickly and then they need to
produce patches and get them out into the wild to combat the viruses.

Before they can make any money selling theire product they need to be
well known and they need to have a track record. But that's just
business. I imagine a gang of friends setting themselves up as good
guys with a hobby then a reputation. Then a small business.

They are the good guys, they don't have the time to go up against other
AVmakers. They need to keep a complex system up and running with all
the add ons and peripherals that all the different manufacturers make
going on at the same time. There is no way all AVs can be on the ball
all the time.

Sometimes their patches cause problems and they need to patch their
patches when they get feedback. If they have to unscramble the
spaghetti that is produced at the same time by other antivirus writers,
the time it would take would be phenomenal.

Then someone would come along and work out a way to get the two search
engines to blow a fuse. That would flatten a substantial segment of the
internet perhaps.

As with all explanations the simplest one is usually the right answer.
I'm not saying I'm right. Norton is or was recently mis-identifying
Spybot and resisiting straightening things out. Personaly I think
Teatimer isn't worth having.

The simplest course then, is not using it and the simplest course with
most antiviruses is to keep things simple and just use the one that
suits you.


Posted by =?Utf-8?B?UGFuZGFfbWFu?= on January 24, 2006, 1:27 pm
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Hi.

First it is not a good idea to post with your real email address (assuiming
it is real) because you are now likely to fall victim of SPAMmers(unsolicated
mail)


Then ,you really don't need more that one antivirus software.As described by
the others they are incompatiable and if you somehow install second they will
definitely work incorrectly.

Choose which one to use -either McAfee or Norton (make sure they are always
updated and their versions are current -2005 or better 2006 versions)

Then if you would like a second opinion about your security and malware
status ,you a online scanner.

Panda Software free Active Scan will be great
http://www.activescan.com


Learn how to protect your computer:
http://free.hit.bg/fightmalware/homepage_en.htm

If you have malware problems and your security softwares are useless :
http://free.hit.bg/fightmalware/fast_MRI.htm


Panda_man
--
Prevention is always better than cure !
Panda TruPrevent - the most intelligent technology to combat unknown malware
http://www.pandasoftware.com
http://free.hit.bg/fightmalware/homepage_en.htm



"javacc2@gmail.com" wrote:

> I have Mcafee antivirus software installed in my machine, and I tried
> to install Norton antivirus software, but it pops up an error message
> "Norton AntiVirus has detected a conflicting anti-virus product is
> already installed and prevents this installation from proceeding." Do
> you know why we couldn't install two different anti-virus software in
> the same machine?
>
> Please advise. thanks!!
>
>

Posted by Patrick Dickey on January 24, 2006, 6:57 pm
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javacc2@gmail.com wrote:
> I have Mcafee antivirus software installed in my machine, and I tried
> to install Norton antivirus software, but it pops up an error message
> "Norton AntiVirus has detected a conflicting anti-virus product is
> already installed and prevents this installation from proceeding." Do
> you know why we couldn't install two different anti-virus software in
> the same machine?
>
> Please advise. thanks!!
>

Along with what the others have said, you also have the possibility of
the first antivirus corrupting the second one, and vice versa. What I
mean by this is, the data files that the antivirus compares your
programs to, contain snippets of virus code (signatures). So, the two
antiviruses will try to remove each other's data files.

You also run the risk of the two antiviruses causing your system to bog
down, while they are scanning files. And, you risk having to reformat
your computer, because one or the other will corrupt your hard drive
enough that it won't boot.

Really though, if you've been using McAfee and want to get rid of it,
you should completely uninstall it before putting on Norton's or any
other antivirus. If for no other reason, then so you can have a clean
test of the new choice. Otherwise, how will you know whether any issues
you have are related to the new antivirus or the fact that you've got
two of them running at the same time.

HTH

--
http://www.pats-computer-solutions.com
Smile.. someone out there cares deeply for you.

Posted by Scherbina Vladimir on January 25, 2006, 1:50 pm
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> Along with what the others have said, you also have the possibility of the
> first antivirus corrupting the second one, and vice versa. What I mean by
> this is, the data files that the antivirus compares your programs to,
> contain snippets of virus code (signatures). So, the two antiviruses will
> try to remove each other's data files.

Signatures are placed not in binary files, most likely there're placed in
some *dat files with own formats, so antivirus "A" cannot read / analyze
database of antivirus "B".

> You also run the risk of the two antiviruses causing your system to bog
> down, while they are scanning files. And, you risk having to reformat your
> computer, because one or the other will corrupt your hard drive enough
> that it won't boot.

OS provides syncronization in it's internal layer, so when two or three
applications calls DeleteFile on the same file, OS will syncronize these
calls.

>
> Really though, if you've been using McAfee and want to get rid of it, you
> should completely uninstall it before putting on Norton's or any other
> antivirus. If for no other reason, then so you can have a clean test of
> the new choice. Otherwise, how will you know whether any issues you have
> are related to the new antivirus or the fact that you've got two of them
> running at the same time.

True :)

>
> HTH
>
> --
> http://www.pats-computer-solutions.com
> Smile.. someone out there cares deeply for you.

--
Vladimir



Posted by Ian Kenefick on January 25, 2006, 7:16 pm
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Scherbina Vladimir wrote:

> Signatures are placed not in binary files, most likely there're placed in
> some *dat files with own formats, so antivirus "A" cannot read / analyze
> database of antivirus "B".

Yeah - proprietary formats are used... but isn't there a problem with
the way Panda encrypt their antivirus database files. I've read in virus
bulletin that they are not completly encrypted and this leads to false
detections by other vendors.


--
Ian Kenefick
http://www.ik-cs.com
ian@ik-cs.com

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