7 Must-Have Graph PowerShell Scripts to Manage Microsoft 365 Groups & Teams

Microsoft 365 Groups and Teams are central to collaboration — but without automation, managing them at scale becomes tedious. These Graph PowerShell scripts will help you create, manage, audit, and optimize your Groups and Teams effortlessly.

Below are 7 must-have scripts for every admin:

Create a Microsoft 365 Group

$params = @{
    displayName = "Project Falcon Team"
    mailEnabled = $true
    mailNickname = "projectfalcon"
    securityEnabled = $false
    groupTypes = @("Unified")
}

New-MgGroup -BodyParameter $params

Tip: Always validate that mailNickname is unique to avoid 400 errors.

Add Members to a Microsoft 365 Group (Bulk Member Addition via CSV)

CSV Template

CSV Template:
GroupId,UserId
group-guid-here,user-guid-1
group-guid-here,user-guid-2

$members = Import-Csv "AddGroupMembers.csv"
foreach ($entry in $members) {
    New-MgGroupMemberByRef -GroupId $entry.GroupId `
        -BodyParameter @{
            "@odata.id" = "https://graph.microsoft.com/v1.0/directoryObjects/$($entry.UserId)"
        }
}

Tip: Use Get-MgGroup and Get-MgUser to fetch IDs beforehand.

Remove a Member from a Group

Remove-MgGroupMemberByRef -GroupId "group-guid" -DirectoryObjectId "user-guid"

Useful for cleaning up access without deleting the group.

List All Archived Teams

$teams = Get-MgGroup -All -Filter "resourceProvisioningOptions/Any(x:x eq 'Team')" ` -Property Id, DisplayName

foreach ($team in $teams) {
    try {
        $teamDetails = Get-MgTeam -TeamId $team.Id
        if ($teamDetails.IsArchived -eq $true) {
            Write-Output "Archived Team: $($team.DisplayName) - ID: $($team.Id)"
        }
    } catch {
        Write-Output "Failed to fetch team details for $($team.DisplayName)"
    }
}

This script retrieves group-backed Teams and checks archival status safely.

Get Member Count for Each Team

$groups = Get-MgGroup -All -Filter "resourceProvisioningOptions/Any(x:x eq 'Team')" ` -Property Id, DisplayName

foreach ($group in $groups) {
    $members = Get-MgGroupMember -GroupId $group.Id
    $memberCount = ($members).Count
    Write-Output "$($group.DisplayName): $memberCount members"
}

Helps detect inactive or bloated teams.

List All Teams Without Owners (Orphaned Teams)

$teams = Get-MgGroup -All -Filter "resourceProvisioningOptions/Any(x:x eq 'Team')" ` -Property Id, DisplayName
foreach ($team in $teams) {
    $owners = Get-MgGroupOwner -GroupId $team.Id
    if (-not $owners) {
        Write-Output "Orphaned Team: $($team.DisplayName)"
    }
}

Teams without owners pose a governance risk. Assign one ASAP.

Export All Teams with Creation Date and Visibility

Get-MgGroup -All -Filter "resourceProvisioningOptions/Any(x:x eq 'Team')" `
            -Property DisplayName, CreatedDateTime, Visibility |
Select-Object DisplayName, CreatedDateTime, Visibility |
Export-Csv "TeamsReport.csv" -NoTypeInformation

Create monthly snapshots to track trends in Team creation and privacy settings.

Final Thoughts

These scripts give you control over group membership, visibility, ownership, and lifecycle management — all critical components of Microsoft 365 governance. Automate your daily admin load, and shift focus toward proactive Teams optimization and clean-up.