This policy setting allows you to configure behavior monitoring. If you enable or do not configure this setting, behavior monitoring will be enabled. If you disable this setting, behavior monitoring will be disabled. Fix: (1) GPO: Computer Configuration\Administrative Templates\Windows Components\Windows Defender\Real-time Protection!Turn on behavior monitoring (2) REG: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows Defender\Real-Time Protection!DisableBehaviorMonitoring