Never mind, I was setting the cookie path in wp-config.php to /. Removing those lines fixed it.
Could you elaborate what you did? I have the same problem and tried everything but still cannot login.
What do you mean by ‘removing those lines’ in wp-config.php?
below is my wp-config.php and not sure what you’re mentioning…
<?php
// ** MySQL settings ** //
define('DB_NAME', 'wordpress'); // The name of the database
define('DB_USER', 'admin'); // Your MySQL username
define('DB_PASSWORD', '##'); // ...and password
define('DB_HOST', 'localhost'); // 99% chance you won't need to change this value
define('DB_CHARSET', 'utf8');
define('DB_COLLATE', '');
// Change SECRET_KEY to a unique phrase. You won't have to remember it later,
// so make it long and complicated. You can visit http://api.wordpress.org/secret-key/1.0/
// to get a secret key generated for you, or just make something up.
define('AUTH_KEY', 'something'); // Change this to a unique phrase.
define('SECURE_AUTH_KEY', 'something'); // Change this to a unique phrase.
define('LOGGED_IN_KEY', 'something'); // Change this to a unique phrase.
// You can have multiple installations in one database if you give each a unique prefix
$table_prefix = 'wp_'; // Only numbers, letters, and underscores please!
// Change this to localize WordPress. A corresponding MO file for the
// chosen language must be installed to wp-content/languages.
// For example, install de.mo to wp-content/languages and set WPLANG to 'de'
// to enable German language support.
define ('WPLANG', '');
/* That's all, stop editing! Happy blogging. */
if ( !defined('ABSPATH') )
define('ABSPATH', dirname(__FILE__) . '/');
require_once(ABSPATH . 'wp-settings.php');
?>
