Check your device performance and health in Windows Security
To help you keep your device secure, Windows Security monitors your device for security issues and provides a health report, which appears on the Device performance & health page. The Health report alerts you to common issues in four key areas and offers recommendations to remedy them.
What is Smart App Control? - Microsoft Support
Protect yourself from malware and phishing. Microsoft security help and learning. Smart App Control is a feature of Windows 11 that helps to block malicious, untrusted, or potentially unwanted apps from running on your device.