So if you are having this issue only when you go to ../wp-admin then it is
because you have force ssl admin set to true. You can find this in
wp-config.php in the root of your WordPress site, you need to set this option
to false.
define('FORCE_SSL_ADMIN', false);
I am assuming your siteurl in the wp_options table in the WordPressdatabase is
set to a http:// address.
//Add following line at the end of the wp-config.php file:
// Option 1:
define('FORCE_SSL_ADMIN', true);
//If that doesn't work then try Option 2:
$_SERVER['HTTPS']='on';