Device Clean-up Rule is Created

Maester checks this too

MT.1053 (Ensure intune device clean-up rule is configured) checks the same setting. Running both reports it twice.

Overview

If device cleanup rules aren’t configured in Intune, stale or inactive devices can remain visible in the tenant indefinitely. This leads to cluttered device lists, inaccurate reporting, and reduced visibility into the active device landscape. Unused devices might retain access credentials or tokens, increasing the risk of unauthorized access or misinformed policy decisions.

Device cleanup rules automatically hide inactive devices from admin views and reports, improving tenant hygiene and reducing administrative burden. This supports Zero Trust by maintaining an accurate and trustworthy device inventory while preserving historical data for audit or investigation.

Remediation

Configure Intune device cleanup rules to automatically hide inactive devices from the tenant:

• Create a device cleanup rule

For more information, see:

• Using Intune device cleanup rules on the Microsoft Tech Community blog

Run it

The check runs as part of the whole assessment, with the ZeroTrustAssessment module installed:

Install-Module ZeroTrustAssessment -Scope CurrentUser
Connect-Maester
Invoke-Maester -Pack ZTA -SkipBuiltIn

Leave out -SkipBuiltIn to run Maester’s own checks in the same run.

About this check

Severity	High
Effort to fix	High
Impact on users	Low
Pillar	Devices
Category	Device management
Product	Intune
Feature	Tenant administration
Area	Devices and endpoints
Licence	Intune
Tenant	Workforce

Product, feature, area and ATT&CK are Maester’s: the assessment does not record them, so Maester keeps them in the pack’s taxonomy.json.

A Microsoft check, part of the Zero Trust Assessment pack. Text from ZeroTrustAssessment 3.1.0, © Microsoft, MIT licence.