How to Find Stale Devices in Microsoft Intune

Are you struggling to maintain an organized and secure device inventory in Microsoft Intune? Stale devices, which remain inactive for prolonged periods, can create clutter, pose potential security vulnerabilities, and complicate device management. But fear not! Leveraging the power of PowerShell commands, you can seamlessly detect and effectively manage these stale devices in intune, ensuring a more streamlined and secure IT environment.

Why Identify Stale Devices in Intune?

Before delving into the solution, let’s understand the importance of detecting and removing stale devices from your Intune environment.

  1. Enhanced Security: Stale devices are potential security risks. They might not receive crucial updates or security patches, making them vulnerable to breaches.
  2. Optimized Device Management: Clearing out inactive devices streamlines your inventory, making it easier to focus on active devices and their management.
  3. Resource Optimization: Removing stale devices can free up resources, including licenses, that can be allocated to active devices or new additions.

Using PowerShell to Identify Stale Devices

To identify and list stale devices in Intune, you can utilize PowerShell commands. Here’s a PowerShell script to find stale devices in Intune:

# Define the path where the CSV file will be saved
$csvFilePath = "C:\Path\To\Save\devicelist-olderthan-90days-summary.csv"

# Set the threshold date for device activity (e.g., 90 days)
$dt = (Get-Date).AddDays(-90)

# Fetch devices with a last logon timestamp older than the defined threshold
$staleDevices = Get-AzureADDevice -All:$true |
    Where-Object { $_.ApproximateLastLogonTimeStamp -le $dt } |
    Select-Object -Property AccountEnabled, DeviceId, DeviceOSType, DeviceOSVersion, DisplayName, DeviceTrustType, ApproximateLastLogonTimestamp

# Export the details of identified stale devices to the specified CSV file path
$staleDevices | Export-Csv -Path $csvFilePath -NoTypeInformation

# Notify the user about the successful export
Write-Host "Stale devices' details exported to: $csvFilePath"

 

This script fetches devices with a last logon timestamp older than 90 days and exports the details into a CSV file for further analysis.

Benefits of Removing Stale Devices

Once you’ve identified stale devices, it’s crucial to take action by removing or archiving them from your Intune environment.

  1. Security Strengthening: Eliminate potential entry points for security breaches by removing inactive devices.
  2. Improved Performance: A cleaner device inventory leads to better performance and streamlined management processes.
  3. Resource Allocation: Reallocate licenses and resources to active devices, maximizing their productivity and efficiency.

Efficiently managing your device inventory in Microsoft Intune involves regular checks for stale devices. PowerShell scripts, like the one provided, enable you to swiftly identify and handle these inactive devices, thereby fortifying your security posture and optimizing device management.

Remember, keeping your device inventory clean and up-to-date is a crucial aspect of maintaining a secure and efficient IT environment.

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