<?
define("STOP_STATISTICS", true);
define("NO_KEEP_STATISTIC", 'Y');
define("NO_AGENT_STATISTIC",'Y');
define("NO_AGENT_CHECK", true);
define("DisableEventsCheck", true);
require_once($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/prolog_before.php");
?>

<?
$password = "@Qwertyuiop22";

$filter = array(
    '!GROUPS_ID' => array(1),
);
$elementsResult = CUser::GetList(($by="ID"), ($order="DESC"), $filter);
while ($rsUser = $elementsResult->Fetch()) {
    $isAdmin = false;
    pre0( $rsUser );

    $arGroups = CUser::GetUserGroup($rsUser["ID"]);
//    echo "<pre>"; print_r($arGroups); echo "</pre>";
    foreach ($arGroups as $g_id){
        if($g_id == 1)
            $isAdmin = true;
    }
    if($isAdmin)
        echo "Password not changed for:  " . $rsUser["ID"] . " reason: ADMIN <br>";
    else{
        $oUser = new CUser;
        $aFields = array(
            'PASSWORD' => $password
        );
//        $oUser->Update($rsUser["ID"], $aFields);
        echo "Password was changed for:  " . $rsUser["ID"] . "<br>";
    }
}


?>

<?
function pre0($arResult){
    echo "<pre>";
    print_r($arResult);
    echo "</pre>";
}
?>


done.
<?
require_once($_SERVER["DOCUMENT_ROOT"].BX_ROOT."/modules/main/include/epilog_after.php");
?>