Intune: Microsoft Defender
TMA-INTUNE-DEFENDER-2.31
Ensure 'Enable Convert Warn To Block' is set to 'Warn verdicts are converted to block'
Description
This policy setting controls whether Microsoft Defender Antivirus network protection will display a warning, or block network traffic. The recommended state for this setting is: Warn verdicts are converted to block. Audit: reads the registry value(s) behind this Defender policy (HKLM\SOFTWARE\Policies\Microsoft\Windows Defender) and prints compliant only when each satisfies the benchmark value. Policy delivered by Intune only appears here once it has been applied to the device.
How it is checked
Audit method: Windows registry
$bad = @(); $v = (Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\PolicyManager' -Name 'EnableConvertWarnToBlock' -ErrorAction SilentlyContinue).'EnableConvertWarnToBlock'; if (-not ($null -ne $v -and @(1) -contains [int64]$v)) { $bad += 'EnableConvertWarnToBlock=' + $v }; if ($bad.Count -eq 0) { 'compliant' } else { 'non-compliant: ' + ($bad -join ', ') }- Expected output
compliant
How it is fixed
Fix method: Guidance or infrastructure patch
To establish the recommended configuration via configuration profiles, set the following Settings Catalog path to Warn verdicts are converted to block. Defender\Enable Convert Warn To Block
Properties
- Operating systems
- Any
- Tags
- intune-defenderintuneregistry
- Reference
- CIS Microsoft Intune for Microsoft Defender Antivirus Benchmark v1.0.0 - 2.31 Ensure 'Enable Convert Warn To Block' is set to 'Warn verdicts are converted to block'
Check this host
Run this on a machine you are allowed to audit. The scan is read-only.
tmaegis scan --target intune-defender --level 2