skype: dubeychandan996 I will help you. One more things while adding form key.
<input type="hidden" name="form_key" value="<?php echo Mage::getSingleton('core/session')->getFormKey(); ?>" />
check whether you are pasting in same login.phtml that are used in frontend. sometimes in xampp also have cache issue.
For That app\code\core\Mage\Core\Model\Session\Abstract\Varien.php
/* to solve login issue */ /*if (!$cookieParams['httponly']) { unset($cookieParams['httponly']); if (!$cookieParams['secure']) { unset($cookieParams['secure']); if (!$cookieParams['domain']) { unset($cookieParams['domain']); } } } if (isset($cookieParams['domain'])) { $cookieParams['domain'] = $cookie->getDomain();*/ //I have commented these lines
or
Open your Magento installation directory. Locate and open index.php file.
Search for error_reporting(E_ALL | E_STRICT); code.
Comment it out like that: /*error_reporting(E_ALL | E_STRICT);*/
And use the following code instead:
error_reporting(E_ALL); $_SERVER['MAGE_IS_DEVELOPER_MODE'] = true;
Uncomment it by removing the # sign, so it looks like that:
ini_set('display_errors', 1);
Save this file and upload to the server. Reload your website page to see errors.
==========alternative==================
change localhost to 127.0.0.1
paste your error if you can see.
core_config_datatable.