Php – Magento can’t log in in admin after migration

adminmagentomagento-1.8PHP

After migration I can't log in to the admin panel. After i enter the username and password, the same page reloads.
I have tried:

Can't log in to Magento Admin

Magento: Can't log into admin [duplicate]

Magento admin login not working

Magento can't login in admin with right username and password

But nothing works
I have tried to comment out the code lines in 

app/code/core/Mage/Core/Model/Session/Abstract/Varien.php.

and nothing!

And I changed the core_config_data web/unsecure/base_url and web/secure/base_url.

I am running out of ideas,
Thank you for any help!

EDIT:

I checked the cookies on the old server, and when on the login page i get an adminhtml cookie, but not on the new i get an hz_amChecked cookie.

EDIT 2:

The new server is on siteground, maybe something I am missing on the settings there
I tried to put a die() in app/code/core/Mage/Core/Model/Session/Abstract/Varien.php but nothing happens.

Best Answer

I found the problem, it was in the /app/etc/local.xml in:

<install>
   <date><![CDATA[Day, dd Mth yyyy HH:mm:ss +0000]]></date>
</install>

I didn't think that the time of the installation was important, but i changed the +0000 to the same value as the new magento installation had and 

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

to

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

cleared the files var/cache, var/session and removed all cookies from my site in the browser and it worked! Finally i can rest a little :) Thank you all anyway for the help!

Related Topic