Can't login into admin panel of Magento

[Anna_Sweet]

Hi everybody!

I got one problem... for no reason can't login into admin panel of Magento, i have alreay create admin2 in MySQL, doesnt help. In google i found sobution to comment GetCookie in Varien.phph

session_set_cookie_params(
$this->getCookie()->getLifetime(),
$this->getCookie()->getPath()
//$this->getCookie()->getDomain(),
//$this->getCookie()->isSecure(),
//$this->getCookie()->getHttponly()
);

- in this case the website doest work at all - white screen, and i made backup from day when everything was fine... doesnt help, i still cant login to admin panel. Anybody can help me?

error_log wrire me -  file does not exist: /public_html/skin/frontend/base/default/css/codnitive

[ekiart2]

I'm not sure if this is your solution, but try logging in from an Incognito Window.

[MagenX · Accepted solution]

you have to check if session was written and you have correct cookie, like domain, path and time

[Anna_Sweet]

Thank you all! The problem was with session, no enough space in file, so i changed session_save for db

/app/etc/local.xml

<session_save><![CDATA[db]]></session_save>