How to update to all active User records without changing field values

var user = new GlideRecord('sys_user');
 user.addQuery("active","true");
user.query();
while (user.next()) {
user.setWorkflow(false); //Do not run business rules
user.autoSysFields(false); //Do not update system fields
user.setForceUpdate(true); //Force the update
user.update();
}