There is also the question of paid or free antivirus.
Some antivirus products, notably McAfee VirusScan, include stellar spyware protection, but many others do not.
Do We Have to Uninstall Existing Antivirus Program Before Installing a New One?
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After uninstalling, you must reboot your PC before installing the new scanner.
Can Two Antivirus Scanners Be Run on the Same System at the Same Time?
In the past, It was never a good idea to run two antivirus scanners simultaneously.
Some Software is designed to be the 2nd scanner on a system.
Why Does One Scanner Detect a Virus When Another Does Not?
Hence one vendor may have added detection (i.e.
a signature) for a particular malware while another vendor may not have.
For this reason, it is oftentimes better to run two different anti-virus applications.
