How to start a scan for viruses or malware in Microsoft Defender
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.
Scan an item with Windows Security - Microsoft Support
To scan specific files or folders, right-click a file or folder, select Show more options, and then select Scan with Microsoft Defender. When the scan is complete, you'll see the Scan options page letting …
Virus and Threat Protection in the Windows Security App
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 the Windows Security App - Microsoft Support
Learn about the Windows Security app and some of the most common tools you can use.
Getting started with anti-malware in Microsoft Defender
If you're concerned and want to have Microsoft Defender run a scan right now, you can do that by going to the Device protection page from the Microsoft Defender dashboard.
Getting started with Microsoft Defender
Learn about getting started with the new Microsoft Defender on your personal devices including Windows, Mac, Android, and iOS.
Schedule a scan in Microsoft Defender Antivirus
Learn how to schedule a Windows Defender Antivirus scan at a time and frequency that you choose.
Remove malware from your PC in Windows 8.1 or Windows 7
Windows Defender and Microsoft Security Essentials are powerful scanning tools that find and remove malware from your PC. Here's how to use Windows Defender in Windows 8.1 or Microsoft Security …
Automatically fix Windows security issues - Microsoft Support
Oct 14, 2025 · Follow these steps to automatically diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall, and other Windows security options and features.
Help protect my device with Windows Security - Microsoft Support
Find out how Windows Security can help keep your PC safe from malicious software and viruses.