Can't login to Magento admin

Question

I have magento installed in a subdirectory. www.domain.com/subdir/magento

This site worked perfectly at one point. I changed nothing, until my client said he could

Answer 1

Find app/code/core/Mage/Core/Model/Session/Abstract/Varien.php. in your Magento install folder. Comment out the lines (see below) 80 to 83. The line number may vary.

    // set session cookie params
    session_set_cookie_params(
        $this->getCookie()->getLifetime(),
        $this->getCookie()->getPath()//,
        //dependes which versin of mage you are using, you may comment these as well
        //$this->getCookie()->getDomain(),
        //$this->getCookie()->isSecure(),
        //$this->getCookie()->getHttponly()
    );

This is caching issue. Which recently Magento community confirmed that is sorted but it is not. :)

Just clear your cache and do this steps it should work anyway.

Comment this lines also

//        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();
//        }

• Make sure you have cookies enabled in your browser, try a number of different browsers including Safari or Opera. Chrome will give some problems and you need to remember to clear you cache in Chrome after making changes!

• Make sure you file permissions are set to EVERYONE - FULL CONTROL for Windows and 777 for your Mac/Linux environment If all that still doesn’t work you can try this: (I do not recommend this solution for a production version of Magento, but for you local test enviroment this will work.)

• Check the version of php you are using. If you are using recent Magento try to find which version of PHP and extensions requires.

More details

Answer 2

I was fighting with this issue today on my local server. I couldn't login using any browser. I really didn't want to comment out any lines in core files or doing any other "dirty" solutions.

Firstly I checked cookie set by browser. It had expiration set to 1970, so clearly it was a cookie problem.

I checked values for cookies in magento database. In phpmyadmin I found table core_config_data, then fields with values : web/cookie/cookie_domain and web/cookie/cookie_path. They were both blank.

My solution was to set:

web/cookie/cookie_domain to my domain name

and

web/cookie/cookie_path to /.

Example:

your domain where you run magento is magento.local set:

web/cookie/cookie_domain = magento.local

and

web/cookie/cookie_path = /

Answer 3

I never resolved the issue. But I wiped the clients computer and reinstalled windows 7, and it worked. It was very strange that it didnt work before as he was not behind a proxy, did not have ad ons or viruses. And the issue reproduced in each of his browsers (chrome firefox and IE). It was not a router issue. It was a windows issue, but I couldn't tell you what exactly was causing it. It was not the internet security settings either, as I checked those. Also checked the host file. As I said before, very baffling

Answer 4

I was facing the same issue and at the end i found that it was due to full disk space and due to this Magento was not able to create sessions file in the var var/session folder. After cleaning up log files that issue was resolved.

Answer 5

In Case, that you dont see any cookie named "frontend" or "adminhtml", when you reload the page, the Magento cookie wasn't set. In my case I have a wrong cookie_domain. I used "null" instead of "NULL".

As I set my cookie_domain to NULL in core_config_data, the problem was solved

Answer 6

Also, you can update the password in the database if everything else from above didn't work and you need desperate access:

UPDATE admin_user SET password=CONCAT(MD5('qXpassword'), ':qX') WHERE username=‘user’;

replace user and password words according to your needs.