Download. What it fixes. Checks the following Windows security features and enables them if needed. Phishing Filter or Smartscreen Filter. User Account Control (UAC) Data Execution Prevention (DEP) Windows Firewall. Antivirus protection status and updates. Runs on. Windows 7. Windows 8.1. Windows 10. See also. Stay protected with Windows Security.

Security Windows 10. 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.

Manage. Remove malware from your Windows PC. OneDrive (home or personal) OneDrive for Windows. Microsoft Defender Antivirus is a powerful tool that finds and removes malware from your PC. Here's how to use it in Windows 10 or 11 to scan your PC.

Each release of the tool helps detect and remove current, prevalent malicious software. This malicious software includes viruses, worms, and Trojan horses. Microsoft uses several metrics to determine the prevalence of a malicious software family and the damage that can be associated with it.

Windows Security is your home to manage the tools that protect your device and your data: Virus & threat protection - Monitor threats to your device, run scans, and get updates to help detect the latest threats. (Some of these options are unavailable if you're running Windows 10 in S mode.)

Microsoft Defender Offline is a powerful offline scanning tool that runs from a trusted environment, without starting your operating system. When should I use Microsoft Defender Offline? Run Microsoft Defender Offline if:

Select Quick scan. Tips: If you want a deeper scan, instead of selecting Quick scan in step 3, select Scan options and choose the type of scan you want. For the most complete scan, run Microsoft Defender Offline. For more about that see Help protect my PC with Microsoft Defender Offline.

Use Virus & threat protection settings when you want to customize your level of protection, send sample files to Microsoft, exclude trusted files and folders from repeated scanning, or temporarily turn off your protection. Manage your real-time protection. Want to stop running real-time protection for a short while?

How to add a file type or process exclusion to Windows Security. Microsoft security help and learning. 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.

Security Windows 10 Windows 11. Windows Security provides built-in security options to help protect your device from malicious software attacks. To access the features described below, tap the Windows Start button, type windows security, select it from the results, and then select Device security.