public/Get-EntraIdGroupOwner.ps1
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<# .SYNOPSIS Retrieves the owners of an Entra ID (Azure AD) group by group Id or display name. .DESCRIPTION This function retrieves all owners of an Entra ID group using Microsoft Graph. It supports searching for the group by Id or display name. Returns a list of UPNs (when using GroupDisplayName) or Ids (when using GroupId). .PARAMETER GroupId The object Id (GUID) of the Entra ID group to retrieve owners from. .PARAMETER GroupDisplayName The display name of the Entra ID group to retrieve owners from. .EXAMPLE Get-EntraIdGroupOwner -GroupId "00000000-0000-0000-0000-000000000001" Returns the Ids of all owners in the group with the specified Id. .EXAMPLE Get-EntraIdGroupOwner -GroupDisplayName "My Security Group" Returns the UPNs of all owners in the group with the specified display name. .NOTES This function requires Microsoft Graph PowerShell SDK to be installed and authenticated. #> function Get-EntraIdGroupOwner { [CmdletBinding(DefaultParameterSetName='ById')] param( [Parameter(Mandatory, ParameterSetName='ById', Position=0, ValueFromPipeline, ValueFromPipelineByPropertyName)] [string]$GroupId, [Parameter(Mandatory, ParameterSetName='ByDisplayName', Position=0, ValueFromPipeline, ValueFromPipelineByPropertyName)] [string]$GroupDisplayName ) process { # Resolve group Id if searching by GroupDisplayName if ($PSCmdlet.ParameterSetName -eq 'ByDisplayName') { $group = Get-MgGroup -Filter "displayName eq '$GroupDisplayName'" if (-not $group) { Write-Warning "No group found with display name '$GroupDisplayName'." return $null } $GroupId = $group.Id } # Get group owners $owners = Get-MgGroupOwner -GroupId $GroupId -All if (-not $owners) { Write-Warning "No owners found for group Id '$GroupId'." return $null } $upns = @() foreach ($owner in $owners) { if ($owner.AdditionalProperties['@odata.type'] -eq '#microsoft.graph.user') { $user = Get-EntraIdUser -Id $owner.Id if ($user -and $user.UserPrincipalName) { $upns += $user.UserPrincipalName } } } return $upns } } |