Hello, After deep look on group joining method of XMPP, we found one solution is describe here: let objXmppStream = XMPPStream() let objGroup = “YourGroupname@YourXMPPHOST” let roomStorage = XMPPRoomMemoryStorage() let roomJID = XMPPJID.jidWithString(objGroup) let objXmppChatRoom = XMPPRoom(roomStorage: roomStorage, jid: roomJID, dispatchQueue: dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_LOW, 0)) objXmppChatRoom.activate(XMPPHelper.sharedInstance.objXmppStream) objXmppChatRoom.fetchConfigurationForm() let …