Magento - Admin login problem after fresh installation

Many times it happens, that after fresh installation of magento we are unable to login with admin. Try the solution for the same.

1) Edit varien.php which located in /[Magento_Dir]/app/code/core/Mage/Core/Model/Session/Abstract/


2) Find out the below pattern & comment last three lines.

session_set_cookie_params(

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

);

 3) Now try to login with admin user