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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.
Open your Windows Security settings. Select Virus & threat protection > Scan options. Select Microsoft Defender Antivirus (offline scan), and then select Scan now. The Microsoft Defender Offline scan takes several minutes to run, and then your PC will restart.
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.
Run a malware scan manually. If you're worried about a specific file or folder on your local device, you can right-click the file or folder in File Explorer, then select Scan with Microsoft Defender.
Scan an item with Windows Security. Windows Security (Windows Defender Security Center in previous versions of Windows) enables you to scan specific files and folders to make sure they're safe. You'll be notified immediately if any threats are found.
Discusses how to remove viruses, spyware, rogue software, or malware using Microsoft Security Essentials, Microsoft Safety Scanner and Microsoft Defender Offline.
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.
How to open PC Health Check. In Windows, use Search on the taskbar to search for PC Health Check, then select it from the list of results. If a PC Health Check update is available, you can quickly install it for the latest version.
Solve problems with detecting and removing malware with Windows Security, including incomplete scans, detection errors, and persistent malware.
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. For more information see How to start a scan for malware in Microsoft Defender.