If you are having trouble to get logged in with the correct username and password, here are some ideas. If you have used google chrome to install magento, use firefox to open magento and edit the app/code/core/Mage/Core/Model/Session/Abstract/Varien.php file within your magento directory and comment those below lines $cookieParams = array ( 'lifetime' => $cookie -> getLifetime (), 'path' => $cookie -> getPath () // 'domain' => $cookie->getConfigDomain(), // 'secure' => $cookie->isSecure(), // 'httponly' => $cookie->getHttponly() ); And use your credentials to log in. I hope this works for you!!!