AD

UPDATE 2022-04-02 – if you would like email addresses with the output, check out my new post at: https://www.howdoiuseacomputer.com/index.php/2022/04/02/export-active-directory-groups-and-members-to-a-csv-file-with-email-addresses/

# export active directory groups and members to csv (also output empty groups with 'No Members' value)
# assumes run on domain controller or import of ActiveDirectory module

$allgroups = Get-ADGroup -Filter *

$result = foreach ( $group in $allgroups ) {

    $hash = @{GroupName=$group.SamAccountName;Member=''}
    $groupid = $group.distinguishedname
    
    if ( $members = Get-ADGroupMember $groupid ) {
            
            foreach ( $member in $members ) {

                $hash.Member = $member.Name
                New-Object psObject -Property $hash
            }
    }
    else {
        $displayname = "No Members"
        $hash.Member = $displayname
        New-Object psObject -Property $hash
    }
}

$result | Export-Csv -Path C:\temp\ActiveDirectoryGroupsAndMembers.csv -NoTypeInformation

# End