Get-MgmtGraphGroupCreatedOnBehalfOf

MgmtGraph: Retrieves the creator of a group

Script

#Requires -Version 5.1
#Requires -Modules Microsoft.Graph.Groups

[CmdletBinding()]
Param (
    [Parameter(Mandatory = $true, Position = 0)]
    [string]$GroupId
)

Process {
    try {
        $creator = Get-MgGroupCreatedOnBehalfOf -GroupId $GroupId -ErrorAction Stop
        
        $results = foreach ($c in $creator) {
            $displayName = $c.AdditionalProperties['displayName']
            if ($null -eq $displayName) { $displayName = $c.DisplayName }

            $upn = $c.AdditionalProperties['userPrincipalName']
            if ($null -eq $upn) { $upn = $c.Mail }

            $type = $c.AdditionalProperties['@odata.type']
            if ($type) { $type = $type -replace '^#microsoft.graph.', '' }

            [PSCustomObject]@{
                GroupId           = $GroupId
                CreatorId         = $c.Id
                DisplayName       = $displayName
                UserPrincipalName = $upn
                Type              = $type
                Timestamp         = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
            }
        }

        Write-Output $results
    }
    catch {
        throw
    }
}

Customize

GroupId string

The unique identifier of the Microsoft Graph group.