Learn about the Windows Security app and some of the most common tools you can use.

Real-time protection is a feature in the Windows Security app that continuously monitors your device for potential threats such as viruses, malware, and spyware. This feature ensures that your device is actively protected by scanning files and programs as they are accessed or executed.

Windows Security, formerly known as Windows Defender Security Center, is an app built into Windows 10 or 11 that helps keep your PC more secure. It includes Microsoft Defender Antivirus, an antivirus tool that helps protect you against viruses, ransomware, and other malware.

To resolve this problem, make sure that the Security Center service is configured correctly, and then start the Security Center service. To do this, follow these steps:

In the Windows Security app on your PC, select Device security > Security details. For more information, see Windows 11 Secured-core PCs. Core isolation provides security features designed to protect core processes of Windows from malicious software by isolating them in memory.

Troubleshoots and fixes common issues with security and malware prevention in Windows.

Get security info and tips about threat prevention, detection, and troubleshooting. Including tech support scams, phishing, and malware.

On this page you can see a summary of the security providers that are looking after your device. In the Windows Security app on your PC, select Settings > Manage providers, or use the following link: Security providers.

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.

In the Windows Security app on your PC, select App & browser control, or use the following shortcut: App & browser control. Smart App Control adds significant protection from new and emerging threats by blocking apps that are malicious or untrusted.