Wordpress admin login cookies blocked error after moving servers

Question

Background: had a working Wordpress 3.7 site at olddomain.com.

I moved it to newdomain.com successfully, and in the process added this to wp-config:

Answer 1

Following step solve my issue

on wp-config.php

//define('WP_CACHE', true); // Added by W3 Total Cache Block this line
//define("COOKIE_DOMAIN", "www.domain.com"); Block this line

Delete following files from wp-content

object-cache.php 
advanced-cache.php
db.php