Jetpack Connection Failures

Jetpack historically relied heavily on XML-RPC to bridge your local server with WordPress.com servers. While newer versions utilize the REST API for many features, entirely disabling XML-RPC can still break Jetpack's core connection. If Jetpack is strictly necessary for your business operations, you cannot use the global __return_false filter. Instead, you must use an advanced filter or .htaccess rules to whitelist the specific IP addresses utilized by Automattic (Jetpack's parent company) while blocking all other traffic.

Mobile App Authentication Issues

The legacy WordPress mobile applications utilize XML-RPC to authenticate and publish content remotely. If you disable xml-rpc in wordpress, these legacy apps will fail. You must transition to using the web-based dashboard via your mobile browser or ensure you are using the latest version of the app that fully supports the modern REST API endpoints.

Bug Fixes Archives

Q: White Screen of Death (WSOD)

A WSOD almost universally indicates a fatal PHP syntax error in your functions.php file. You likely missed a closing parenthesis, used curly/smart quotes instead of straight quotes, or placed the code inside an existing function block. Access your server via SFTP, download the functions.php file, remove the newly added code, and re-upload it to restore your site. Ensure you strictly copy the code blocks provided above without modifying the structural syntax.

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