OpenCart Admin Panel Stuck in Redirect Loop (Too Many Redirects)

1. Clear Browser Cookies & Cache

• Open OpenCart admin in incognito mode.
• Clear cookies & cache for your website.
• If you have a Cloudflare proxy, disable it temporarily.

2. Check config.php Files (Incorrect URLs)

• Open /admin/config.php and /config.php.
• Ensure the correct URLs are set:
  php

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  define('HTTP_SERVER', 'https://yourdomain.com/admin/');
define('HTTPS_SERVER', 'https://yourdomain.com/admin/');

• If you recently enabled SSL, make sure HTTPS_SERVER is correct.

3. Fix Cookie & Session Settings in config.php

• Add or update this line in /admin/config.php:
  php

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  ini_set('session.cookie_secure', 'On');
ini_set('session.use_only_cookies', 'On');


4. Manually Clear OpenCart Sessions

• If session data is corrupt, delete OpenCart session files:
  sh

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  rm -rf system/storage/session/*

• You can also truncate the session table in MySQL:
  SQL

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  TRUNCATE TABLE oc_session;


5. Disable SSL Temporarily in the Database

• If SSL was enabled incorrectly, disable it using SQL:
  SQL

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  UPDATE oc_setting SET value = '0' WHERE key = 'config_secure';

• Then, try logging in again.

6. Check for .htaccess Redirect Issues

• If .htaccess has incorrect rules, it can cause redirect loops.
• Rename .htaccess temporarily and try again.

7. Disable Admin Login Redirects via Database

• If an extension is causing the issue, disable it:
  SQL

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  UPDATE oc_setting SET value = '0' WHERE key = 'config_admin_language';


8. Restart the Web Server & Try Again

• If you recently changed settings, restart Apache/Nginx:
  sh

  service apache2 restart # For Apache
service nginx restart # For Nginx


9. Restore from a Working Backup

• If the issue started after an update, restore a backup of config.php.
• Try reverting recent changes and check logs.

Comments:
Incorrect settings or session conflicts usually cause this issue. If you’re still stuck, check the browser console for redirect errors. 🚀