CIS Microsoft Windows 10 Enterprise Release 1909 Benchmark

Audit:

Navigate to the UI Path articulated in the Remediation section and confirm it is set as prescribed. This group policy setting is backed by the following registry location:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\AppHVSI:FileTrustCriteria

Remediation:

To establish the recommended configuration via GP, set the following UI path to Enabled: 0 OR Enabled: 2 :

Computer Configuration\Policies\Administrative Templates\Windows Components\Windows Defender Application Guard\Allow users to trust files that open in Windows Defender Application Guard

Note: This Group Policy path may not exist by default. It is provided by the Group Policy template AppHVSI.admx/adml that is included with the Microsoft Windows 10 Release 1809 & Server 2019 Administrative Templates (or newer).

Impact:

Users will not be allowed to manually trust files without a prior antivirus check.

Default Value:

Disabled. (Users will not be able to trust files that open in Windows Defender Application Guard.)

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