Virus & threat protection in Windows Security - Microsoft Support
Learn how to use virus and threat protection options in Windows Security to scan your device for threats and view the results.
Stay protected with Windows Security - Microsoft Support
Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.
Protect my PC from viruses - Microsoft Support
Learn how to protect your Windows devices and personal data from viruses, malware, or malicious attacks.
Turn off Defender antivirus protection in Windows Security
Follow these steps to temporarily turn off Defender antivirus protection in Windows Security. Keep in mind that if you do, your device may be vulnerable to threats.
How to prevent and remove viruses and other malware
Discusses how to remove viruses, spyware, rogue software, or malware using Microsoft Security Essentials, Microsoft Safety Scanner and Microsoft Defender Offline.
How to start a scan for viruses or malware in Microsoft Defender
Important: The National Public Data breach exposed personal information, including names, addresses, and social security numbers. Learn how to protect yourself and how Microsoft Defender is helping to prevent fraud.
Turn Windows Security on or off - Microsoft Support
When you get a new device and start up Windows 10 for the first time, the antivirus protection that comes installed with the device is your default security app. However, Windows Security is pre-installed and ready for you to use at any time.
Turn Microsoft Defender Firewall on or off
Under Privacy & security , select Windows Security > Firewall & network protection. Open Windows Security settings
Add an exclusion to Windows Security - Microsoft Support
Find out how to stop Windows Security from alerting you about or blocking a trusted file, file type, or process, by adding it to the exclusions list.
Automatically fix Windows security issues - Microsoft Support
Troubleshoots and fixes common issues with security and malware prevention in Windows.