Windows 8.1 does have built-in security software, however, it is widely accepted that this built-in security is not enough. Therefore for better online security, you need a third-party antivirus to keep you safe from viruses, ransomware, and other malware.

Do I need antivirus with Windows 8?

Hi, No version of Windows needs an antivirus, however, they are recommended for protection and other security related purposes, of course. Before enabling Windows Defender, do note that you will need to uninstall any current antivirus you’re using.

Is Windows 8.1 Defender good enough?

Windows Defender isn’t the absolute best antivirus software, but it’s easily good enough to be your main malware defense.