Help: Is it possible to have more than one anti-virus software on your computer?

@VotreAmie (3037)
United States
June 22, 2007 8:56pm CST
Hi all. I had some viruses on my computer that I believe came from some of the GPT sites that I joined lately. I have avast anti-virus software which I ran and got rid of the trojans it detected. It's a free software so I don't know it it detects all threats. So I am thinking of adding other free anti-virus software that are free to scan the computer such as AVG. Is it possible to do that? Do you know of other good and free anti-virus software? Thank you for your answer and your time.
10 people like this
24 responses
@maevic (821)
• Bahrain
23 Jun 07
It's possible to have 2 antivirus running at the same time BUT expect that your computer's speed will be slowing down because of this. I'm using AVG antivirus and anti-spyware and my laptop is running very good.
@ESKARENA1 (18299)
23 Jun 07
i thought it caused problems with the operating system to run two?
1 person likes this
@maevic (821)
• Bahrain
23 Jun 07
nope but expect that each anti-virus will fight each other...computer will boot at start up very slow/
1 person likes this
@gabs8513 (48712)
• United Kingdom
23 Jun 07
Well I have heard it is not good to have more then one I have got one on my Computer that I have had 2 years now it is a free download and absolutely brilliant It is called Anti vir just type that in your Browser and it will bring it up Quite a few of my Friends have got that one and not had problems I had problems with Avast to and I would never use it again
2 people like this
@2wicelot (2946)
23 Jun 07
Yes some antivirus softwares will allow you to install more than on the same computer. but some would not allow you to have more than one to be installed.
2 people like this
@ram_cv (16516)
• India
23 Jun 07
Of course, you can have more than one antivirus on your machine. The only problem sometimes these anti viruses access portions of memory where in viruses reside. So one anti virus might suspect the other of being a virus if run together. So you can run them one at a time and that should be pretty fine. Cheers! Ram
@santuccie (3382)
• United States
23 Jun 07
You should only have one antivirus at a time for resident monitoring, though it's okay to have multiple AV scanners. Avira AntiVir is one of the very best, commercial or free, in overall detection. According to virustotal.com, the only scanner that beats it is WebWasher, which I haven't tried yet. AntiVir is available in a free version that is perfect for on-demand scanning. It lacks a POP3 scanner, and is one of the most vulnerable to termination by a hostile agent, but the scanner is tops. You can turn its resident monitor off, and use it for a "second opinion." If you got infected in a drive-by download, you need a better firewall. My recommendation is Sunbelt Personal Firewall (formerly Kerio), which is available in a free version. I've seen a system or two that wouldn't work with it, but that's pretty much the story with all firewalls. Yet, it seems to have fewer compatibility issues than most, and is one of only three I've used in whose IPS engines I have confidence. The other two are BlackICE and McAfee. Few people, even in my field, are aware that an inline protocol filter can block almost any Internet-based attack before the malicious code has the chance to compile in memory and execute. Never forget that your firewall is your first line of defense, not your antivirus.
1 person likes this
• United States
23 Jun 07
I love Blackice! I can't say enough good things about this firewall.... Votre, It is more than ok to have more than two. In fact, I will run one after I close the first one, just to get what is left, if anything is left. I do some commerce(shopping, paying bills, etc. online so I live behind a fortress-so to speak- of firewalls, process blockers/killers, anti-virus, spam/adware/sypware blockers, etc. Now, I don't use them all at the same time but I do run different ones on ocassional and some run all the time, such as Black Ice...try a free online virus scanner first, then go to cnet and download some programs try them out and then purchase the license - you will be glad you did. Let me know if you need some suggestions...goodluck.
@FLampard (394)
• Malaysia
23 Jun 07
Certainly you can, but its not good to run the virus check of 2 anti virus together. It will slow your computer speed down, or may crash it.
1 person likes this
@santuccie (3382)
• United States
23 Jun 07
Actually, it's the other way around. It's okay to run multiple on-demand scanners simultaneously, but you should never have more than one antivirus running real-time. One could actually block the other from doing its job.
1 person likes this
@angeljenn (894)
• Zaragoza, Spain
17 Mar 08
hello there to U...i really don't know...but if it's really possible, that would be so cool...i'm currently using NOD32, the best anti-virus ever for me...so very effective and super cool...have a blessed day ahead of U...may GOD BLESS U & UR family always!!!
1 person likes this
@kingri (46)
• United States
28 Jun 07
Hi VotreAmie. You NEVER want to run more than one anti-virus program on a computer at a time. You always want to ininstall one anti-virus before running another. It can cause some very serious problems. Since the anti-virus is going through you files constantly checking for viruses, when a second anti-virus sees the other program manipulating the files it can cause disastrous effects. Avast is a good program that runs both anti-virus and spyware as a resident program. Means it monitors continuously. According to most reviews, it is not as strong a engine as that used in avg. However, avg anti-virus doesnt have a built in spyware scanner. Avg makes a spyware scanner, and they will let you run it as a resident program for a trial period, but after the trial it will no longer protect you constantly. In other words, you can still update it but you have to run it manually. Also unlike anti-virus programs, it is always best NOT to depend on only one anti-spyware program. When I am removing spyware from a computer I have four different programs I run in safe mode. I run them until all four show up with no errors. If after that I reboot and they return, I am fortunate enough to be a Microsoft registered partner and I enlist the aid of the Microsoft engineers. It is rare I have to take advantage of that priveledge. Fortunately most of the time things go ok. But NO, never use two anti-virus programs I hope this helps. Be glad to help any further if I can.
@b_gryl (420)
• Philippines
25 Jun 07
Yes, it is possible. In fact, we have two anti-virus installed in our computer. We use AVG anti-virus and AVG anti- spyware. I forgot the name of the other anti-virus because my brother uninstalled it an hour ago. Now, i'm planning to use Karspersky anti-virus because viruses keep on attacking our computer. I think freeware anti-virus will not help a lot because the other features of it are disabled.
1 person likes this
@Ronimas (699)
• India
24 Jun 07
Votreamie, you have started an interesting discussion. Yes it's possible to install more than anti-virus software on the computer, but during installation, some good anti virus software will not install unless you uninstall the one that 's already on your system. However, for home PC user, it is not recommended to run more than one anti virus because, 1. An Anti virus program consumes much space to run and hence installing or running two or more such program definitely slows down the computer performance. Sometimes even it hang or freez. 2. There is also conflict between anti virus program while scanning and harm to system files. 3. The two antivirus program may interfere each others activity, and consider their behavior virus like and may delete or quarantine each others core file. So guess what will happen. It's better to have one good antivirus and a firewall installed to ensure security for home user. I personally use ZONE ALARM SECURITY SUITE which comes with antivirus, antispyware and firewall in bundle. and it does superb for my PC. For the other good free antivirus software I can argue for ANTIVIR PERSONAL EDITION and A-Squared.
@senthil2k (1501)
• India
24 Jun 07
Yes. Its definitely possible for you to have multiple Antivirus softwares on your system. But it is NOT RECOMMENDED. Even many of the antivirus will try to detect any existing Antivirus in your system while installing. Some of them wont allow you to install if another antivirus is found, some will just warn you and proceed. But Personally, I do advise you not to install multiple antivirus. It will cause Performance Degradation,System File Corruption and many other System problems. Choose the best one and install just one.
1 person likes this
@royal52gens (5380)
• United States
24 Jun 07
I run 5 different security programs. Each program looks for viruses but some of the look for other items like trojans, worms, tracking cookies, spyware, adware, registry problems and a few other things. I do not run them all at the same time though. I have been able to run three of them in tandem. I start one, minimize it. Wait a few minutes and start the next one. Minimize that one. Then after a few more minutes, I start the third one. They take up a lot of power. So I let them run during the night. In the morning, I clear anything they found and close the programs. You might try AdAware and A-Squared2. These are both free programs that you can download. Also, Spybot (free) and Stopzilla are good programs also. Then of course there is Norton Security. There is also McAfee Security which is very good. Symantic makes a good program also. There is a new one that I want to check out. I have heard good things about it. It is free and is called Windows Defender. I also run pop-up blockers on my browsers.
@edigital (2710)
• United States
23 Jun 07
No. More than one anti-virus software in one PC is not workable as both the anti-virus if search for virus at a time a conflict inside computer will start then PC will slow and may crush. But you can install one anti-virus and one anti-spyware or adware at a time no problem.
1 person likes this
@ozkid92 (550)
• United States
23 Jun 07
yeah it is. i have ez antivirus, and pestpatrol. some great ones online are also panda scan (http://www.pandasoftware.com/products/activescan) and housecall (the best) (http://housecall.trendmicro.com/) these may take a while to run, just like software will, but they really do take out all the viruses known, and if there is one found that is not known, it will terminate it anyway! they work really great. hope you get it all cleaned up there!
• Philippines
23 Jun 07
yes you can... in fact u cant just have 2.. u can have multiple anti viruses and there will be no conflicts too it.. the only problem that you will have is that it will really slow down ur computer..
1 person likes this
@leafgxu (473)
• China
23 Jun 07
You can install more than one anti-virus software in your computer but don't open the anti-virus monitoring in a time or your system would have some errors. If you doult a document has virus, you should use more than one anti-virus software to scan it but I suggest that don't open more than one anti-virus software at a time. I am using the Kaspersky Anti-Virus now and I think it is good.
1 person likes this
@ESKARENA1 (18299)
23 Jun 07
it is certainly not recommended. Two anti virus systems would undoubtably conflict and could cause all sorts of complications blessed be
1 person likes this
@archer1811 (1099)
• Philippines
23 Jun 07
Dont install 2 kinds of anti virus in your computer, your computer might collapse, that was what happened to my computer before when my husband tried to experiment and installed 2 kinds of anti virus, dont collapse actually it did not perform well so my husband formatted it, as far as i know once a trojan virus entered into your computer you dont have any choice than to format it, but try to consult a technician first before you do any move.
1 person likes this
@yanstill (1491)
• China
23 Jun 07
i think it is possible to have some anti-virus softwares on your pc,but the problem is,you don't know if those software are conflict,sometimes when you set up one anti-virus software,it will mention you that you need to unload other anti-virus software first.i don't know why,but i guess it is better to have only one anti-virus software.
1 person likes this
@Malfred (134)
• Philippines
23 Jun 07
yes it is possible to have more than one anti-virus on your pc, but the more you have anti-virus the more reconfiguring, means if you have more than five it's just like stoping your pc's to perform as usual. i think the best firewall a pc's can have is the user itself and maybe a little help with your firewall.