MT.1157 - CPU Load Factor should be optimized (20-30%)

Overview

Checks that the average CPU load factor is configured between 20-30% in all assigned Microsoft Defender Antivirus policies.

Inappropriate CPU load settings may impact system performance or reduce scan effectiveness, leaving endpoints vulnerable to threats.

Remediation action:

1. Open Microsoft Endpoint Manager > Endpoint Security > Antivirus
2. Edit the relevant Microsoft Defender Antivirus policy
3. Set Average CPU Load Factor to 20-30%

Related links

• Configure Microsoft Defender Antivirus
• Microsoft Endpoint Manager

Test Metadata

Field	Value
Test ID	MT.1157
Severity	High
Suite	Maester
Category	Defender
PowerShell test	Test-MtMdeCpuLoadFactor
Tags	Defender, Maester, MT.1157

Source

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