Windows 10 and 11 includeWindows Security, which provides the latest antivirus protection. Your device will be actively protected from the moment you start Windows. Windows Security continually scans for malware (malicious software), viruses, and security threats. In addition to this real-time protection, updates are downloaded automatically to help keep your device safeand protect it from threats.
Tip:If you're a Microsoft 365 Family or Personal subscriber you get Microsoft Defender, our advanced security software for Windows, Mac, iOS, and Android, as part of your subscription. Learn more atGetting started with Microsoft Defender.
Windows 10 or 11 in S mode
Some features will be a little different if you're running Windows 10 or 11 in S mode. Because this mode is streamlined for tighter security, the Virus & threat protection area has fewer options. But don't worry—the built-in security of this mode automatically prevents viruses and other threats from running on your device, and you'll receivesecurity updates automatically. For more info, see Windows 10 or 11 in S mode FAQ.
Important security info
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Windows Security is built-in to Windows and includes an antivirus program called Microsoft Defender Antivirus. (In early versions of Windows 10, Windows Security is called Windows Defender Security Center).
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If you have another antivirus app installed and turned on, Microsoft Defender Antivirus will turn off automatically. If you uninstall the other app, Microsoft Defender Antivirus will turn back on automatically.
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If you're having problems receiving Windows Security updates, see Fix Windows Update errors and the Windows Update FAQ.
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For info on how to uninstall an app, see Repair or remove an app in Windows.
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To change your user account to an admin account, see Create a local user or administrator account in Windows.
Understand and customize Windows Security features
Windows Security is your home to manage the tools that protect your device and your data:
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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.)
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Account protection -Access sign-in options and account settings, including Windows Hello and dynamic lock.
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Manage firewall settings and monitor what’s happening with your networks and internet connections.
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- Update settings for Microsoft Defender SmartScreen to help protect your device against potentially dangerous apps, files, sites, and downloads. You'll have exploit protection and you can customize protection settings for your devices.
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Device security- Review built-in security options to help protect your device from attacks by malicious software.
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View status info about your device’s performance health, and keep your device clean and up to date with the latest version of Windows.
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Family options -Keep track of your kids’ online activity and the devices in your household.
To customize how your device is protected with these Windows Security featuresselect Start > Settings > Update & Security > Windows Security or select the button below.
Open Windows Security settings
Status icons indicate your level of safety:
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Green means there aren’t any recommended actions right now.
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Yellow means there is a safety recommendation for you.
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Red is a warning that something needs your immediate attention.
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.
Tip:On Windows 11 you may have to select Show more options after you right-click to see the option to scan the file or folder.
If you suspect there's malware or a virus on your device, you should immediately run a quick scan.
Run a quick scan in Windows Security
Note:Because of streamlined security, this isn't availableif you're runningWindows 10 or 11 in S mode.
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Select Start > Settings > Update & Security > Windows Security and thenVirus & threat protection.
Open Windows Security settings -
Under Current threats, select Quick scan (or in early versions of Windows 10, under Threat history, select Scan now).
If the scan doesn't find any issues, but you're still concerned, you may want to check your device more thoroughly.
Run an advanced scan in Windows Security
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SelectStart > Settings > Update & Security > Windows Security and thenVirus & threat protection.
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Under Current threats, select Scan options (or in early versions of Windows 10, under Threat history, select Run a new advanced scan).
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Select one of the scan options:
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Full scan (check all files and programs currently on your device)
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Custom scan (scan specific files or folders)
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Microsoft Defender Offline scan (restarts your computer and runs a deep scan before Windows loads to catch especially sneaky malware). Learn more about MicrosoftDefender Offline
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Select Scan now.
Learn more about running an advanced scan
Schedule your own scan
Even though Windows Security is regularly scanning your device to keep it safe, you can also set when and how often the scans occur.
Note:Because of streamlined security, this isn't availableif you're runningWindows 10 or 11 in S mode.
Schedule a scan
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Select the Start button, type schedule tasks in the Search box, and in the list of results, select Task Scheduler.
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In the left pane, select the arrow (>) next to Task Scheduler Library to expand it, do the same with Microsoft > Windows, and then scroll down and select the Windows Defender folder.
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In the top-center pane, select Windows Defender Scheduled Scan. (Point to the choices to see the full names.)
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In the Actions pane on the right, scroll down and then select Properties.
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In the window that opens, select the Triggers tab, and then select New.
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Set your preferred time and frequency, and then select OK.
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Review the schedule and select OK.
Turn Microsoft Defender Antivirus real-time protection on or off
Sometimes you may need to briefly stop running real-time protection. While real-time protection is off, files you open or download won't be scanned for threats. However, real-time protection will soon turn on automatically again to protect your device.
Turn real-time protection off temporarily
Note:Because of streamlined security, this isn't availableif you're runningWindows 10 or 11 in S mode.
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Select Start > Settings > Update & Security > Windows Security and thenVirus & threat protection > Manage settings. (In early versions of Windows 10, select Virus & threat protection > Virus & threat protection settings.)
Open Windows Security settings -
Switch the Real-time protection setting to Off and choose Yes to verify.
See also
How malware can infect your PC
Microsoft security help and learning
As a seasoned cybersecurity expert, I bring a wealth of knowledge and hands-on experience in the realm of digital security. My expertise extends to various operating systems, with a particular focus on Windows security features. Having delved into the intricacies of Windows 10 and 11 security mechanisms, I am well-versed in the tools and practices that safeguard devices from a myriad of threats.
Now, let's dissect the information provided in the article:
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Windows Security Overview:
- Windows 10 and 11 come equipped with Windows Security, an integrated platform providing real-time antivirus protection.
- The security suite continuously scans for malware, viruses, and other security threats, offering active protection from the moment the system starts.
- Automatic updates are deployed to ensure the device remains secure over time.
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Microsoft Defender Antivirus:
- Windows Security includes Microsoft Defender Antivirus, the built-in antivirus program that actively guards against threats.
- Users with Microsoft 365 Family or Personal subscriptions receive Microsoft Defender, an advanced security software covering Windows, Mac, iOS, and Android.
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Windows 10 or 11 in S Mode:
- Running Windows in S mode enhances security by streamlining features, although the Virus & threat protection options are reduced.
- Automatic security updates are still in place, preventing viruses and threats from executing on the device.
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Security Information and Troubleshooting:
- If another antivirus application is active, Microsoft Defender Antivirus will deactivate automatically, reactivating when the third-party app is uninstalled.
- Troubleshooting tips are provided for issues related to Windows Security updates, Windows Update errors, and app uninstallation.
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Customization and Management of Windows Security:
- Windows Security serves as the hub for managing device protection tools, including threat monitoring, account protection, firewall settings, and more.
- Users can customize settings to enhance protection, with status icons indicating the safety level.
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Malware Scans:
- Users can manually run malware scans on specific files or folders by right-clicking in File Explorer and selecting "Scan with Microsoft Defender."
- Options for quick scans, advanced scans, and offline scans are available for different levels of thoroughness.
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Scheduled Scans:
- Users can schedule their own scans through Task Scheduler, allowing flexibility in choosing scan times and frequencies.
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Real-Time Protection Settings:
- Real-time protection by Microsoft Defender Antivirus can be temporarily turned off if necessary, with the ability to resume automatic protection.
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Safety Status Icons:
- Status icons (green, yellow, red) indicate the safety level of the device, providing quick visual cues for users.
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Additional Resources:
- The article concludes with references to related topics, such as understanding how malware can infect PCs and links to Microsoft security help and learning resources.
In summary, the provided information outlines a comprehensive guide to Windows 10 and 11 security features, from basic overviews to advanced customization options, catering to both general users and those seeking more in-depth security measures.
