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.

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Nov 26, 2024 · Running a full system scan on Windows 11 will help identify and eliminate any hidden threats on your computer. Follow these steps to thoroughly scan your entire system.

Sep 5, 2024 · Here's how to completely and correctly scan for viruses and other malicious software like Trojan horses, rootkits, spyware, adware, worms, etc.

Jun 9, 2025 · Learn how to scan computer for viruses in 2025. Complete guide with free and paid methods, warning signs, prevention tips, and step-by-step for PC protection.

Apr 15, 2025 · By following this guide, you can confidently scan your Windows 10 or 11 PC for viruses and malware anytime for free and keep your computer running smoothly and securely.

Free scan to see if your Windows or Mac get infected. Detect and remove viruses, malware, spyware, and other malicious threats.

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Nov 2, 2025 · Learn how to scan and remove computer viruses using trusted antivirus software options, find free online virus scanners, and safeguard your system from threats.