Most of the time, people believe that the more the security, the better protection their computer will get. And by this it usually means installing more than one antivirus program on a single PC, with the thinking that the computer’s defense line is more enhanced.

Unfortunately, computer protection against viruses and malicious software doesn’t follow the same line of defense in the normal sense and installing multiple antivirus programs might do more harm than good to your computer and in certain cases it may lead to a computer lock-up, from which it is difficult to restore the settings, without fomatting the system files. Check out the reasons below why you shouldn’t install multiple antivirus programs at the same time.

Performance Problems

When antiviruses work on protecting your computer, they need to use computer resources in order to perform their job. Aside from that, they have to keep tabs on every potential entry point that a virus can use on your computer. This can range from plugging in a USB flash drive to downloading a file from the Internet. As such, it needs to perform what’s called “real-time scanning” which monitors any actions being performed on files and checks to see if it’s a virus performing the said action.

This is no big deal if you only have one antivirus installed, since it has “enough room” to settle in and do its job. The more antivirus programs you add, however, the more memory needs to be taken up by antiviruses scanning every possible intrusion point. When this happens, the computer won’t have enough memory available to perform other tasks, therefore you will find it running slower than before.

Accusing One Another

Antivirus programs are designed to detect malicious and harmful programs and files on your computer. However, different antivirus programs do this using different processes, which might not be in conformity to each other. Antivirus programs have the capability to not only detect harmful programs and files, but also remove or modify them.

In the case of multiple antivirus programs, one program might detect the other as a potential threat, ensuing in a combat, which may be harmful for the computer. Furthermore, these multiple antivirus programs are very competitive and might modify the firewall settings of the computer, doing more harm than good.

Fighting Over Files

The objective of an antivirus is to work as quick as possible to isolate a virus when it infects your PC. This means that you’re going to have two or more highly vigilant antiviruses that will be monitoring everything you do at exactly the same time. While it initially sounds good, the results will be anything but that.

When a files does turn out to be a virus, multiple antiviruses can end up making things more trouble than need be. Both of them will want to remove and delete the virus under their own terms, which will cause both of them to ask you if you want to quarantine them. Unfortunately, they’ll only really accept a quarantine if they’re the ones doing the quarantining. If you allow one to quarantine the virus and deny the other one, that second antivirus may pick up on the file in the first antivirus’ quarantine and constantly alert you of a virus threat, despite the fact that it’s safely stored away.

How About Scanners?

In the case of malware detectors or anti-spyware programs, two or more can be run together at the same time, without tampering with the system’s defenses, and can actually add to it. Some antivirus programs like Norton, McAfee, MS essentials provide antivirus programs as well as antispyware programs hence, reducing your effort to have separately install them.

However, anti spyware programs are significantly different from antivirus programs and can be installed along with your standard antivirus programs, with or without built-in anti-spyware programs. So you can install malware detectors and anti-spyware programs like Spybot, in addition to your antivirus program. Most of the standard antivirus programs like McAfee and windows MS essentials download updates by themselves with very little interaction with the user.

So if you currently have two or more antivirus programs installed in your computer’s system, keep the one you think suits your needs best and uninstall the other one at once. While in the case of antispyware, you may install two at once, but anything more than that will actually be more intrusive and can lead to exasperating consequences.

This entry was posted by Staff Writer on Saturday, January 7, 2017 at 6:25:36 AM and is filed under Computer Security & Data Protection.

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