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

I was getting this same error.

I had hard coded the Home and SiteURL in wp-config.php for a brand new website - no plugins even installed.

The problem: I had a space at the end of the URL.

define('WP_HOME','http://100.000.000.01/~acctname/wp ');
define('WP_SITEURL','http://100.000.000.01/~acctname/wp ');

Removing the space fixed this error.

define('WP_HOME','http://100.000.000.01/~acctname/wp');
define('WP_SITEURL','http://100.000.000.01/~acctname/wp');