General: Windows Defender SmartScreen must be enabled (Server)

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Windows Defender SmartScreen helps protect systems from programs downloaded from the internet that may be malicious. Enabling SmartScreen can block potentially malicious programs or warn users.

Remediation

To fix this configure the policy value for
Computer Configuration
|_ Administrative Templates
|_ Windows Components
|_ File Explorer
|_ "Configure Windows Defender SmartScreen" to "Enabled" with either option "Warn" or "Warn and prevent bypass" selected.

Windows 2019 includes duplicate policies for this setting. It can also be configured under
Computer Configuration
|_ Administrative Templates
|_ Windows Components
|_ Windows Defender SmartScreen
|_ Explorer
|_ "Configure Windows Defender SmartScreen" to "Enabled" with either option "Warn" or "Warn and prevent bypass" selected.

STIG:
Server
2022: https://www.stigviewer.com/stig/microsoft_windows_server_2022/2023-09-11/finding/V-254361
2019: https://www.stigviewer.com/stig/microsoft_windows_server_2019/2023-09-11/finding/V-205692 / https://www.stigviewer.com/stig/windows_server_2019/2020-06-15/finding/V-93411
2016: https://www.stigviewer.com/stig/microsoft_windows_server_2016/2023-08-22/finding/V-224940 / https://www.stigviewer.com/stig/windows_server_2016/2020-06-16/finding/V-73559

Nist 800-53: SI-16
CSCv7: 8.3