请找到 这个文件夹：
app\code\core\Mage\Core\Model\Session\Abstract
然后修改Varien.php这个文件：
找到代码（大约88行）：
$cookieParams = array(
'lifetime' => $cookie->getLifetime(),
'path' => $cookie->getPath(),
'domain' => $cookie->getConfigDomain(),
'secure' => $cookie->isSecure(),
'httponly' => $cookie->getHttponly()
);
将后面的三个注释一下就可以了：
$cookieParams = array(
'lifetime' => $cookie->getLifetime(),
'path' => $cookie->getPath(),
//'domain' => $cookie->getConfigDomain(),
//'secure' => $cookie->isSecure(),
//'httponly' => $cookie->getHttponly()
);
然后重新登陆一下。就可以进去后台了。
如果不行还要注释一句：
// if (isset($cookieParams['domain'])) {
// $cookieParams['domain'] = $cookie->getDomain();
// }
如果不行就注释以下代码：
// session cookie params
$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($cookieParams['domain']);
}
}
}
if (isset($cookieParams['domain'])) {
$cookieParams['domain'] = $cookie->getDomain();
}
*/
