Configure Microsoft Defender SmartScreen to block potentially unwanted apps

This policy setting lets you configure whether to turn on blocking for potentially unwanted apps with Microsoft Defender SmartScreen. Potentially unwanted app blocking with Microsoft Defender SmartScreen provides warning messages to help protect users from adware, coin miners, bundleware, and other low-reputation apps that are hosted by websites. Potentially unwanted app blocking with Microsoft Defender SmartScreen is turned off by default. If you enable this setting, potentially unwanted app blocking with Microsoft Defender SmartScreen is turned on. If you disable this setting, potentially unwanted app blocking with Microsoft Defender SmartScreen is turned off. If you don't configure this setting, users can choose whether to use potentially unwanted app blocking with Microsoft Defender SmartScreen. This policy is available only on Windows instances that are joined to a Microsoft Active Directory domain, Windows 10 Pro or Enterprise instances that enrolled for device management, or macOS instances that are managed via Mobile Device Management (MDM) or joined to a domain via MCX.