WordPress is powerful, but let’s be honest — errors can be frustrating.

You open your site, and suddenly…
👉 White screen
👉 Database error
👉 Login not working

It feels scary, especially if you’re not a developer.

The good news? Most Common WordPress Errors and How to Fix once you understand the reason behind them.

In this guide, you’ll learn:

• The most common WordPress issues
• Why they happen
• Step-by-step solutions (simple language)

Let’s fix your site 👇

1. White Screen of Death (WSOD)

What is it?

Your website shows a completely blank page. No error, no message.

Why it happens?

• Plugin conflict
• Theme issue
• PHP memory limit

How to fix it

• Disable all plugins:
  • Go to /wp-content/plugins
  • Rename the folder (e.g., plugins-old)
• Switch to default theme:
  • Rename your current theme folder
• Increase memory limit:

define('WP_MEMORY_LIMIT', '256M');

Real Example

A business website installed a new plugin → site went blank → plugin conflict → fixed by disabling plugin.

2. Error Establishing a Database Connection

What is it?

Your site cannot connect to the database.

Common causes

• Wrong database credentials
• Server issue
• Corrupted database

Fix steps

• Check wp-config.php:

define('DB_NAME', 'your_db');
define('DB_USER', 'your_user');
define('DB_PASSWORD', 'your_password');
define('DB_HOST', 'localhost');

• Contact hosting support
• Repair database:

/wp-admin/maint/repair.php

Real Example

After migrating hosting, DB details changed → site down → fixed by updating credentials.

3. 404 Error on Pages or Posts

What happens?

Pages show 404 Not Found, but they exist.

Why?

• Broken permalink settings

Solution

• Go to:
  • Settings → Permalinks
• Click Save Changes (no changes needed)

Bonus Fix

• Check .htaccess file

Real Example

Developer updated URL structure → links broke → fixed in 10 seconds.

4. Internal Server Error (500)

Why it happens?

• Corrupted .htaccess
• Plugin/theme issue
• PHP limits

Fix it

Step 1: Rename .htaccess

• Login via FTP
• Rename .htaccess → .htaccess_old

Step 2: Disable plugins

Step 3: Re-upload .htaccess

Real Example

A WooCommerce store crashed during update → .htaccess corrupted → fixed quickly.

5. Login Page Redirect Loop

Problem

You enter login details → it reloads again and again.

Causes

• Cookie issues
• Plugin conflict
• Wrong site URL

Fix

• Clear browser cookies
• Disable plugins
• Check wp-config.php:

define('WP_HOME','https://yoursite.com');
define('WP_SITEURL','https://yoursite.com');

6. Memory Exhausted Error

Error message

“Allowed memory size exhausted”

Why?

Your site needs more memory than allocated.

Fix

Add in wp-config.php:

define('WP_MEMORY_LIMIT', '256M');

Or contact hosting provider.

7. Mixed Content Error (HTTPS Issue)

What happens?

• Site shows “Not Secure”
• Images/scripts not loading

Fix

• Update URLs:
  • Settings → General
• Use plugin like:
  • Really Simple SSL

Real Example

Business switched to HTTPS → images broke → fixed via SSL plugin.

8. Plugin or Theme Conflict

Signs

• Site breaks after update
• Features stop working

Fix

• Disable all plugins
• Activate one by one
• Identify the problem plugin

Pro Tip

Always test updates on staging site.

9. Slow Website Speed

Why it happens?

• Too many plugins
• Unoptimized images
• Cheap hosting

Fix

• Use caching plugin
• Optimize images
• Use CDN

Tools

• GTmetrix
• PageSpeed Insights

10. WordPress Not Sending Emails

Problem

• Contact form not working
• Order emails not received

Fix

• Use SMTP plugin
• Configure email properly

Recommended

• WP Mail SMTP

FAQs

1. What is the most common WordPress error?

The White Screen of Death and database connection errors are the most common.

2. Can I fix WordPress errors without coding?

Yes! Most issues can be fixed using basic steps like disabling plugins or changing settings.

3. How do I prevent WordPress errors?

• Keep plugins updated
• Use reliable hosting
• Take regular backups

4. Why does my WordPress site break after update?

Usually due to plugin or theme conflicts.

5. Should I use a staging site?

Yes, especially for business websites to avoid live issues.

Check More : How To Show Error Message On WooCommerce Checkout Page