How to Remove Old WordPress Core Files Not Removed During Update

WordPress, the most popular content management system (CMS) globally, is known for its ease of use and flexibility. However, like any software, it occasionally encounters issues. One common problem users face is old WordPress core files not being removed during updates. These leftover files can pose security risks and cause functionality issues. In this guide, we will walk you through the steps to safely remove these old core files from your WordPress installation.

Understanding the Issue

When WordPress updates, it should ideally remove outdated core files and replace them with the latest versions. However, this process sometimes fails, leaving behind obsolete files. These old files can:

1. Compromise Security: Outdated files may contain vulnerabilities that have been patched in newer versions.

2. Cause Conflicts: Old files can conflict with new ones, leading to functionality issues.

3. Take Up Space: Although usually small, old files contribute to unnecessary clutter on your server.

Also Read - Fix Partially Loaded WordPress Pages: Step-by-Step Guide

Identifying Old WordPress Core Files

Before you proceed with removing old files, it's essential to identify them correctly. Follow these steps:

1. Backup Your Website: Always back up your website before making any changes. Use plugins like UpdraftPlus or BackupBuddy to create a complete backup of your site.

2. Use an FTP Client: Access your WordPress files using an FTP client like FileZilla. Connect to your server with the credentials provided by your hosting provider.

3. Navigate to the WordPress Root Directory: Locate the root directory of your WordPress installation, usually named public_html, www, or after your site’s name.

Common Locations of Old Core Files

Old core files are typically found in the following directories:

• Root Directory: Files like wp-config.php or index.php may have old versions.
• wp-admin Directory: Contains administrative files that may not be updated correctly.
• wp-includes Directory: Holds core WordPress files and libraries.

How to Remove Old WordPress Core Files

Once you have identified the old core files, you can proceed with their removal. Here’s a step-by-step process:

Step 1: Backup Your Website

It cannot be stressed enough how important it is to back up your website. This step ensures that you can restore your site to its previous state if anything goes wrong.

Step 2: Access Your Site via FTP

Use an FTP client to access your WordPress files. Navigate to the root directory of your WordPress installation.

Step 3: Compare Files

Compare the files in your current installation with a fresh download of the latest WordPress version. You can download the latest version from the official WordPress website.

Step 4: Identify Old Files

Old files will typically have different timestamps or might not be present in the latest version. List these files for removal.

Step 5: Remove Old Files

Carefully delete the identified old files. Ensure you are only removing outdated files to avoid breaking your site.

Step 6: Update File Permissions

Ensure that your remaining files have the correct permissions. Typically, files should be set to 644 and directories to 755. You can change permissions using your FTP client or through your hosting control panel.

Also Read - WordPress Error Solution: Can't Update to Latest WordPress Version

Verifying Your Site

After removing old files, check your website thoroughly to ensure everything is functioning correctly. Navigate through your pages, test forms, and check for any errors. If you encounter issues, you can restore your backup and try the process again, ensuring you do not delete any critical files.

Using Plugins for Automation

Several plugins can help manage core files and automate the removal process. Some popular options include:

• WP-Optimize: Optimizes your database and removes unnecessary files.
• Advanced Database Cleaner: Identifies and cleans old core files and database entries.
• WP-Sweep: Cleans up your WordPress database, including old revisions, unapproved comments, and orphaned files.

Conclusion

Regular maintenance of your WordPress site, including the removal of old core files, is crucial for security and performance. By following the steps outlined above, you can ensure that your site remains clean, secure, and efficient. Remember always to back up your site before making any changes and to verify everything afterward.

Maintaining a clean and up-to-date WordPress installation will help you avoid potential issues and keep your website running smoothly. If you are unsure about any steps, consider consulting with a professional or using reliable plugins to assist with the process.