While quarantining a virus is safe and the best course of action for infected files, there is always the risk of your antivirus making a false alert and quarantining a system file that your computer needs to run effectively. Which is why the deleting process is usually left to your discretion. Quarantined files cannot harm your computer but they do still take up valuable space on your hard drive. Therefore, if you have infected files in quarantine, you should clean them as soon as possible.
Not all antivirus programs will be able to detect all threats. Full system scans will uncover more infected files than basic antivirus scans , simply because more files are being scanned. The more files you scan, the higher the possibility that your scan will uncover an infected file, so a full scan is always recommended wherever possible. As mentioned above, certain antivirus programs are better at detecting and removing certain strains of viruses or malware than others.
Antivirus programs differ in terms of the malware they search for and the settings they have. So some antivirus programs may be better at protecting you from spyware and phishing attacks , but they lack protection against ransomware. You may have malware lurking on your computer without you evening realizing it. If you have your antivirus running in the background, it may have already quarantined them.
Human nature, of course, would prefer it entirely off the premises, so once you're sure it's not a file your computer needs — delete!
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Please Enter Email. This field is for validation purposes and should be left unchanged. If you instruct your antivirus software to delete all infected files, some that are crucial to your computer's operating system might get deleted. This could affect the functionality of your operating system and programs.
Cleaning can be useful, but antivirus software can't clean a worm or a Trojan because there is nothing to clean; the entire file is the worm or Trojan. Quarantine occupies the middle ground, moving the file to safe storage that's under the control of the antivirus application so that it can't harm your system.
This gives you the option to restore the file in case you decide the file was mistakenly tagged as harmful. Generally speaking, the best option for a worm or Trojan is to quarantine or delete. If it's a true virus, the best option is to clean. However, this assumes you are able to distinguish exactly what type it is, which might not always be the case. The best rule of thumb is to proceed along the continuum from the safe option to the safest.
Start by cleaning the virus. If the antivirus scanner reports that it cannot clean it, choose to quarantine it so that you have time to examine what it is and decide if you want to delete it. Delete the virus only: 1 if the AV scanner specifically recommends this; 2 if you've done research and found that the file is totally useless and you're certain it's not a legitimate file; or 3 if there's simply no other option.
Check the default settings in your antivirus software to see what options have been preconfigured for automatic use, and adjust accordingly. Actively scan device characteristics for identification. This means that all webpages with a web address beginning avast. To manage your cookie preferences in Google Chrome, refer to the instructions under Change your cookie settings in the following article from Google Chrome Help:. JavaScript is enabled for all websites by default in Mozilla Firefox.
If you have disabled JavaScript using a browser add-on that allows you to customize your JavaScript settings, you need to re-enable JavaScript using this add-on. For more information about JavaScript settings in Mozilla Firefox, refer to the following article from Mozilla Support:. To manage your global cookie preferences for all websites that you visit using Mozilla Firefox, refer to the following article from Mozilla Support:.
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