If you trust a file, file type, folder, or a process that Windows Security has detected as malicious, you can stop Windows Security from alerting you or blocking the program by adding the file to the exclusions list.

Use an anti-malware app - Installing an anti-malware app and keeping it up to date can help defend your PC against viruses and other malware (malicious software). Microsoft Defender is free anti-malware software included with Windows, and it's kept updated automatically through Windows Update. There are also anti-malware products made by other ...

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. Select the Download button on this page.

Data Execution Prevention (DEP) is a technology built into Windows that helps protect you from malicious code launching from areas of memory that have been designated as for data only.

Protect your Android, iPhone, Mac, and Windows devices from threats by installing Microsoft Defender. Download Microsoft Defender on your devices either by: Scanning the following QR code. Searching for Microsoft Defender in your app store. Sharing with your devices, the following link: Copy link.

Virus & threat protection in Windows Security helps you scan for threats on your device. You can also run different types of scans, see the results of your previous virus and threat scans, and get the latest protection offered by Microsoft Defender Antivirus. Under Current threats you can: See any threats currently found on your device.

Microsoft Defender Antivirus regularly scans your device to help keep it safe. We try to do this while you’re not using your device so it doesn’t interfere with your work. You can also schedule Microsoft Defender Antivirus to scan at a time and frequency that you choose.

Windows 10. Microsoft Defender Antivirus and Windows Firewall are on your device to help protect it from viruses and other malicious software. But if you think they've missed something run Microsoft Defender Offline which can sometimes detect malware that others scanners missed.

Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.

Antivirus and antimalware software: FAQ. Here are answers to common questions about Microsoft security software, including updates, where to download, and common software errors.