Knowledgebase

Reinstalling WordPress Core Files with WP-CLI (Firstserv Guide)

This guide explains how to safely reinstall the WordPress core files using WP-CLI. This can help resolve issues caused by corrupted or missing core files without affecting your content.

Prerequisites

Before you begin:

• ✅ It is strongly recommended to back up your website
• ✅ Ensure you have SSH access enabled on your hosting account
  • (Available on most Firstserv plans)

Step-by-Step Instructions

1. Access Terminal / SSH

Connect to your server using one of the following:

• cPanel → Terminal
• An SSH client (e.g. PuTTY or Terminal)

2. Navigate to Your WordPress Directory

Move to your WordPress installation directory, usually:

(Adjust the path if your site is installed in a subdirectory.)

3. Confirm You’re in the Correct Directory

Check that the directory contains your WordPress files by looking for wp-config.php:

You should see files such as:

• wp-config.php
• wp-content/
• wp-admin/

4. Reinstall WordPress Core Files

Run the following command:

✅ This will:

• Download fresh WordPress core files
• Replace existing core files

⚠️ It will not modify:

• Your wp-config.php file
• Your wp-content folder (themes, plugins, uploads)

5. Clear Cache (Optional)

If you're using LiteSpeed Cache, clear the cache to ensure changes take effect:

6. Verify Your Website

• Visit your website and admin area
• Confirm that everything is working correctly

7. Update Database (If Prompted)

If WordPress indicates a database update is required, run:

When to Use This Method

Reinstalling WordPress core files is useful when:

• Core files are corrupted or missing
• You encounter unexplained errors
• Updates have failed or caused issues

Summary

Using WP-CLI to reinstall WordPress:

• Refreshes core files safely
• Preserves your content and configuration
• Helps resolve common issues quickly

If you need help accessing SSH or running WP-CLI commands, the Firstserv support team is always available to assist.