I got this error when second time login to the admin panel of magento ,
frontend works with no issue ,
Any help is appreciated , i disabled cookie in varien.php too like as follows
$cookieParams = array(
'lifetime' => $cookie->getLifetime(),
'path' => $cookie->getPath(),
// 'domain' => $cookie->getConfigDomain(),
// 'secure' => $cookie->isSecure(),
// 'httponly' => $cookie->getHttponly()
);
//
// if (!$cookieParams['httponly']) {
// unset($cookieParams['httponly']);
// if (!$cookieParams['secure']) {
// unset($cookieParams['secure']);
// if (!$cookieParams['domain']) {
// unset($cookieParams['domain']);
// }
// }
// }
and i deleted domain cookies from firebug too .
There are can be a lot of reasons.
Ussualy clear cache (project/var/cache
). Also clear browser coockies.
Check if you script has permissions to write a files into var/session
or in Redis
and so on.
(It depends how you configure your session storage in admin panel)