Скачать или смотреть Resolving the mysqli_real_connect(): (HY000/1045): Access Denied for User Error in WordPress

Learn how to troubleshoot and fix the `mysqli_real_connect(): (HY000/1045): Access Denied for User 'WordPressUser'-'localhost'` error when accessing your WordPress admin area. Discover common causes and effective solutions!
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This video is based on the question https://stackoverflow.com/q/70627526/ asked by the user 'Nicholas Yoannou' ( https://stackoverflow.com/u/16230379/ ) and on the answer https://stackoverflow.com/a/70631758/ provided by the user 'Nicholas Yoannou' ( https://stackoverflow.com/u/16230379/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Troubleshooting the mysqli_real_connect(): (HY000/1045) Error in WordPress

If you've ever encountered the frustrating error message mysqli_real_connect(): (HY000/1045): Access denied for user 'WordPressUser'-'localhost' (using password: YES) while trying to access your WordPress admin area, you're not alone. This error can block you from logging in and managing your site, leaving you searching for answers. Let's dive into what causes this error and how you can solve it effectively.

Understanding the Problem

This error usually indicates a problem with the connection between your WordPress installation and the MySQL database. It occurs when the credentials used to access the database are incorrect or when there’s a misconfiguration in the system that disrupts that connection.

What Typically Causes This Error?

Incorrect Database Credentials: The username, password, or host defined in the wp-config.php file might not match the settings in your MySQL server.

Corrupt or Interfering Plugins: Sometimes, plugins may conflict or hold outdated settings that disrupt the database connection.

File Transfer Issues: If you recently transferred your site to a different server, some settings (like database credentials) may have changed inadvertently or not synced up correctly.

Steps Taken to Identify the Problem

In the scenario presented, several troubleshooting steps were undertaken to find the root cause of the error:

Reviewing the wp-config.php File: Double-checking that the database credentials were accurate. Since the main site was functioning, this was ruled out as a problem.

Checking Directory Permissions: Setting the proper permissions for the WordPress directory. Ensuring that your web server has permission to read and write to the necessary files is crucial.

Debugging the Issue: Enabling debug mode in WordPress to reveal any hidden errors – yet it only displayed the mysqli_real_connect() error.

Despite these efforts, the cause of the error remained elusive until further investigation revealed a significant clue.

The Solution: Identifying and Removing the Culprit Plugin

Upon further digging, it was discovered that the issue stemmed from a corrupt plugin. Multiple backup plugins had been installed previously, and one of them had incorrectly stored a database username that did not match the transferred database.

How Was the Issue Resolved?

Search for the Problematic Username: Using the 'search' feature in PHPMyAdmin, the troublesome WordPressUser username was located within the database.

Deleting the Faulty Plugin: The plugin responsible for this conflict was removed from the WordPress files, which helped in rectifying the issue.

Removing the Database Entry: The specific row containing the incorrect database username was deleted from the database.

After completing these steps, the error was resolved, and access to the WordPress admin area was restored.

Final Thoughts

It's critical to be vigilant when transferring WordPress sites or adding new plugins. Before installing new plugins, ensure that your site is backed up, especially if you're using multiple plugins with overlapping functionalities.

Being prepared and understanding how to quickly diagnose issues can save considerable time and hassle in the future.

Should you face similar issues, remember to methodically check your configurations, permissions, and installed plugins to identify and resolve the problem quickly.



This experience serves as a reminder to always keep an eye on your WordPress environment and maintain a clean, org