Learn how to protect your Windows devices and personal data from viruses, malware, or malicious attacks.

This article contains lists of tools and resources that Microsoft makes available to help you understand how to avoid or remove malware and viruses from your Windows-based computer.

If you suspect that your device may have malware you should have Microsoft Defender run a scan. Here's how to do that on Windows, Mac, or Android.

It includes features such as Microsoft Defender Antivirus, Windows Firewall, and Smart App Control, which work together to provide real-time protection against viruses, malware, and other security threats.

That significantly reduces the risk of viruses, malware, and unwanted software impacting you. Imagine using your PC with confidence, knowing that Smart App Control is there proactively blocking …

Get tips to help protect your home computer from scams, malware, viruses, and other online threats that might try steal your personal information.

The virus and threat protection page of the Windows Security app is designed to help you safeguard your device against various threats such as viruses, malware, and ransomware.

Microsoft 365 Family and Microsoft 365 Personal give you advanced protection from viruses and cybercrime, tools to help keep your information secure and private, and ways to recover your files …

Find answers to common questions about Microsoft security software, including updates, where to download, and common software errors.

Find out how Windows Security can help keep your PC safe from malicious software and viruses.