Private/Get-EntraIDDeviceID.ps1
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function Get-EntraIDDeviceID { <# .SYNOPSIS Get the Entra ID device ID from the local device. .DESCRIPTION Get the Entra ID device ID from the local device. .NOTES Author: Nickolaj Andersen Contact: @NickolajA Created: 2021-05-26 Updated: 2021-05-26 Version history: 1.0.0 - (2021-05-26) Function created #> Process { # Define Cloud Domain Join information registry path $EntraIDJoinInfoRegistryKeyPath = "HKLM:\SYSTEM\CurrentControlSet\Control\CloudDomainJoin\JoinInfo" # Retrieve the child key name that is the thumbprint of the machine certificate containing the device identifier guid $EntraIDJoinInfoThumbprint = Get-ChildItem -Path $EntraIDJoinInfoRegistryKeyPath | Select-Object -ExpandProperty "PSChildName" if ($EntraIDJoinInfoThumbprint -ne $null) { # Retrieve the machine certificate based on thumbprint from registry key $EntraIDJoinCertificate = Get-ChildItem -Path "Cert:\LocalMachine\My" -Recurse | Where-Object { $PSItem.Thumbprint -eq $EntraIDJoinInfoThumbprint } if ($EntraIDJoinCertificate -ne $null) { # Determine the device identifier from the subject name $EntraIDDeviceID = ($EntraIDJoinCertificate | Select-Object -ExpandProperty "Subject") -replace "CN=", "" # Handle return value return $EntraIDDeviceID } } } } |