I was annoyed when I couldn’t login to Magento admin panel, the problem was pretty lame – it was the session saving problem. So all I had to do is replace http:/localhost/<path> with http://127.0.0.1/<path> That’s a temporary solution Permanent Solution : Go to app/code/core/Mage/Core/Model/Session/Abstract/Varien.php file within your magento directory  Find : $cookieParams = array( remove the , (comma)(…)