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Troubleshooting AIOS IP Address Detection Issues with Cloudflare and ipify

8 threads Sep 9, 2025 Plugin → All-in-one security (aios) – security and firewall

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Many users of the All-In-One Security (AIOS) plugin encounter a common error message in their settings: "failure: The IP line doesn’t exist in the response. Response: Status: success" or errors from ipify like "IPv6 failure: error (Internal Server Error)". This guide will help you understand why this happens and walk you through the most effective solutions.

Why These IP Detection Errors Occur

The AIOS plugin performs checks to determine your site's real visitor IP address, which is crucial for security features like banning and logging. It does this by communicating with external services (Cloudflare and ipify) from your browser. These errors typically indicate one of a few problems:

  • Cloudflare Trace Access: The plugin attempts to fetch data from https://www.cloudflare.com/cdn-cgi/trace. If this URL is blocked or inaccessible from your browser, the check will fail.
  • ipify API Access: Similarly, the plugin calls the https://api.ipify.org and https://api64.ipify.org/ APIs. A failure here often points to a server or browser-side restriction preventing these calls.
  • JavaScript Conflicts: Since these checks are performed via AJAX (asynchronous JavaScript) from your browser, a conflict with another plugin or theme can break the process.
  • Outdated Settings File: For users behind a reverse proxy (like Nginx, Cloudflare, etc.), a recent update may have changed how the IP retrieval method is stored, potentially reverting to a default, incorrect setting.

Common Solutions to Try

Based on community reports and solutions, follow these steps to resolve the issue.

1. Manually Test the Services

First, rule out a general connectivity problem. Open the following links in your browser while logged into your site's WordPress admin:

If these pages load successfully and show your IP address, the problem is likely not a simple block. If they do not load, you may need to contact your hosting provider to inquire about restrictions on accessing these external services.

2. Check for JavaScript Errors

The IP detection test runs in your browser. To see if there's a conflict:

  1. Navigate to WP Security > Settings > Advanced Settings.
  2. Open your browser's Developer Tools (usually by pressing F12).
    3. <liGo to the Network tab and then filter by Fetch/XHR.
  3. Refresh the page and watch the network log as it loads. Then, click the button to detect your IP again.
  4. Look for any calls to admin-ajax.php or the ipify APIs that have a status other than 200 OK (e.g., 403, 500). Red entries typically indicate failures. Any errors here can help pinpoint the conflict.

3. Verify and Manually Set the IP Retrieval Method (For Proxy Users)

If your site is behind Cloudflare, Nginx, or another reverse proxy, this is a critical step. A recent AIOS update changed how the IP setting is stored, which can sometimes cause it to revert.

  1. Go to WP Security > Settings > Advanced Settings.
  2. In the Choose IP Retrieval Method dropdown, select the correct method for your setup (e.g., HTTP_CF_CONNECTING_IP for Cloudflare, HTTP_X_FORWARDED_FOR for other proxies).
  3. Save Changes.
  4. Advanced Check: If the problem persists, you can manually verify the setting was saved. Using your hosting provider's file manager or FTP, navigate to wp-content/uploads/aios/firewall-rules/settings.php. Open this file and look for the line "aiowps_ip_retrieve_method":"X". The number X must correspond to your chosen method (e.g., 2 for HTTP_X_FORWARDED_FOR). If it is incorrect, you can edit the file directly or try re-saving the settings in the plugin admin to force it to update.

4. Temporarily Isolate for Conflicts

To rule out a theme or plugin conflict, temporarily switch to a default WordPress theme (like Twenty Twenty-Four) and disable all other plugins. Then, check if the IP detection works. If it does, reactivate your plugins and theme one by one to identify the culprit.

Conclusion

IP detection errors in AIOS are almost always related to connectivity, conflicts, or incorrect configuration for proxy services. The steps above cover the most successful solutions reported by the community. If you continue to experience issues, the All-In-One Security (AIOS) team is actively working on enhancing the automatic IP detection logic for future releases.

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