Can't log in to Magento Admin

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I'm having troubles logging into Magento's admin panel on one of our staging sites (it works 100% on our webdev servers and was working just fine not too long ago on the staging server as well).

I've done some research, and most people suggest that it's got to do with running Magento on a localhost and browsers not saving cookies for domains with no dots in the domain name. The problem with that, however is that we're running it from http://staging.sitename... etc.

Another few things that were suggested are where someone changed the default name for accessing the admin in the config, but we haven't changed it.

Does anyone have any ideas that might help?

Thanks for taking the time to help me out!

Kind Regards,
Rémy

23 Answers

I managed to fix it! I found this solution here: http://blog.chapagain.com.np/magento-admin-login-problem/.

I wanted to know why that fixed it though and var_dumped the items I commented out and realized that the cookie domain was being set to just '/' and we have magento set up under '/shop/'. So I went to the configuration section (having managed to log in after commenting out the 3 lines mentioned in the article), changed the Cookie Domain and Cookie Path to be blank and saved. I then uncommented those lines and tried again and all's working well!

Having the specific error would help. A couple shots in the dark -

It's worth checking your rewrites. I've had issues moving from server to server where one of them doesn't have the rewrite setup correctly. if servername.com/index.php/admin works, but servername.com/admin doesn't, then you have a rewrite issue.

It could conceivably also be that the base_url is not configured for the right server. Did you change it when you moved the database over? See my answer at this post for details.

In my case session folder was missing under var folder. I just created var/session folder and set permission to 777, cleared cache and done.

You should check sysytem.log for this.

go to Varien.php app\code\core\Mage\Core\Model\Session\Abstract\Varien.php cleanup the files of var folder and make the mentioned changes:

        //session cookie params
        $cookieParams = array(
            'lifetime' => $cookie->getLifetime(),
            'path'     => $cookie->getPath()
            // 'domain'   => $cookie->getConfigDomain(),
            // 'secure'   => $cookie->isSecure(),
            // 'httponly' => $cookie->getHttponly()
        );

Clearing the application storage from Chrome's DevTools fixed this issue for me.

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