Windows Defender is a high-performing antivirus program that outperforms industry standards. AV-Test's Windows antivirus list reports Windows Defender's strong performance in protection.

Antivirus apps for your PC protect your personal information, data, bank accounts, and much more. We've tested more than two dozen utilities to help you choose the best antivirus for your needs.

“Microsoft Defender is surprisingly effective for free antivirus software, and with a Microsoft 365 subscription, you get ...