MT.1156 - Scanning Network Files should be enabled

Overview

Verify that scanning network files is enabled despite SMB load considerations.

Disabled network file scanning creates attack vectors through shared files.

Remediation action:

1. Open Microsoft Endpoint Manager > Endpoint Security > Antivirus
2. Edit the relevant Microsoft Defender Antivirus policy
3. Enable Allow Scanning Network Files

Related links

• Configure Microsoft Defender Antivirus
• Microsoft Endpoint Manager

Test Metadata

Field	Value
Test ID	MT.1156
Severity	High
Suite	Maester
Category	Defender
PowerShell test	Test-MtMdeNetworkFileScanning
Tags	Defender, Maester, MT.1156

Source

• Pester test: tests/Maester/Defender/Test-MtMdeAntivirusPolicy.Tests.ps1
• PowerShell source: powershell/public/maester/defender/Test-MtMdeNetworkFileScanning.ps1