WordPress Database Connection Error After Migration Fix

Verify wp-config.php Database Credentials

The most common cause of a wordpress database connection error after migration is incorrect database credentials in your wp-config.php file. Access your site's files via FTP or cPanel File Manager. Locate wp-config.php in your WordPress root directory. Look for DB_NAME, DB_USER, DB_PASSWORD, and DB_HOST. These must exactly match the credentials provided by your new host or the ones you set up for the database. Even a single typo will cause an Error Establishing a Database Connection.

define('DB_NAME', 'your_db_name');
define('DB_USER', 'your_db_user');
define('DB_PASSWORD', 'your_db_password');
define('DB_HOST', 'localhost');

Confirm Database User Permissions

Even if the credentials are correct, the database user might lack the necessary permissions to access the database. Log into your hosting control panel (cPanel, Plesk, etc.), navigate to the database management section (e.g., phpMyAdmin or MySQL Databases). Ensure the user specified in wp-config.php is assigned to the database and has all privileges. This is a frequent oversight after a wordpress database error after changing host.

Check Database Host Value

While localhost is common for DB_HOST, some hosts use a specific IP address or hostname. If you're experiencing a wordpress database connection timeout, especially after moving to a new server, verify this value with your hosting provider. An incorrect host will prevent any connection attempt from succeeding.

define('DB_HOST', 'your_database_host');

Attempt Database Repair

Sometimes, the database itself can become corrupted, leading to a connection error even with correct credentials. WordPress has a built-in repair tool. Add define('WP_ALLOW_REPAIR', true); to your wp-config.php file, then visit yourdomain.com/wp-admin/maint/repair.php. Always back up your database before attempting a repair, as data loss is possible. After repair, remove the line from wp-config.php. If this doesn't work, or you suspect severe damage, refer to our WordPress Database Corrupted or Crashed Fix guide.

define('WP_ALLOW_REPAIR', true);

If DIY Fails, Seek Expert Help

If none of these steps resolved your wordpress database connection error after moving to new server or other related issues, this is where professional help saves time and prevents further damage. Complex database issues, especially after a wordpress database connection error after cpanel transfer, often require deeper investigation beyond simple configuration checks.