Prestashop cant login in admin

Here is some things you can try :

1/ Clear your browser cache and your cookies

2/ Try using Firefox instead of Chrome (which seems have some unexpected problems)

3/ Check PS_SHOP_DOMAIN and PS_SHOP_DOMAIN_SSL in ps_configuration table

4/ Manually clear smarty cache : remove all files from tools/smarty/compile and tools/smarty/cache

5/ Disable the IP check in classes/Cookie.php (this can causes many issues with dynamics IP) : in isLoggedBack(), remove or comment the fourth condition :

AND (!isset($this->_content['remote_addr']) OR $this->_content['remote_addr'] == ip2long(Tools::getRemoteAddr()) OR !Configuration::get('PS_COOKIE_CHECKIP'))

6/ Make the expire time shorter for cookies (IE can have issues with longest time cookies) : in classes/Cookie.php constructor,

set : $this->_expire = isset($expire) ? (int)($expire) : (time() + 3600);

instead of $this->_expire = isset($expire) ? (int)($expire) : (time() + 1728000);

I had the same issue after adding a NGINX as reverse proxy in front of my Apache web server.

The problem was from the « Check the IP address on the cookie » parameter set to « yes ». Since i was locked out from admin and could not change it, i did it directly in the database with this SQL request :

UPDATE ps_configuration SET value = 0 WHERE name='PS_COOKIE_CHECKIP';

PS : ps_ is my table prefix, you may adapt it to your settings.

I spent a lot of time debugging this. Installed prestashop locallly on my computer. I my case the following, you should manually navigate to the following:

< domain >/admin/index.php