WordPress Fixes

WordPress powers over 40% of the web. Its plugin ecosystem makes almost anything possible — and makes plenty of things break.

The problems covered here aren't edge cases. They're the issues that appear in support forums every day, that site owners search for constantly, and that often have straightforward fixes once you know where to look.

Why WordPress breaks

WordPress itself is stable. The problems usually come from three sources:

Plugin conflicts — Two plugins trying to modify the same thing. A caching plugin breaking a form. A security plugin blocking legitimate functionality. The more plugins, the more potential conflicts.

Server configuration — Shared hosting limitations, PHP mail disabled, memory limits too low. WordPress needs certain server capabilities that budget hosting often restricts.

Theme customizations — Code added to functions.php that stops working after an update. Customizations that assume a specific plugin version. Quick fixes that become permanent problems.

Understanding where problems typically originate helps you diagnose faster. A form not sending emails is almost always server-side, not plugin-side. A white screen after a plugin update is plugin-side. A slow dashboard with a fast frontend is usually database or hosting.

Common WordPress problems

Forms not sending email

The most searched WordPress problem. Your contact form shows "Message sent!" but the email never arrives.

This is almost never the form plugin's fault. Contact Form 7, WPForms, Gravity Forms — they all work correctly. The problem is how WordPress sends email.

WordPress uses PHP's mail() function by default. Many hosts disable it, don't configure it properly, or send from IPs that are blacklisted. Even when it works, emails often land in spam because there's no authentication.

The fix: Use SMTP instead of PHP mail. Install WP Mail SMTP, connect it to a transactional email service (Resend, Brevo, SendGrid), and configure DNS records for authentication.

Full guide: Why Your WordPress Form Isn't Sending Emails

Plugin conflicts

Something worked yesterday, doesn't work today. Or a new feature won't activate. Or the site breaks after an update.

Plugin conflicts happen because WordPress doesn't prevent plugins from stepping on each other. Two plugins can both try to modify the checkout page, enqueue the same JavaScript library at different versions, or hook into the same action at the same priority.

Diagnosis workflow:

1. Deactivate all plugins
2. Activate them one by one
3. Test after each activation
4. When the problem reappears, you've found your culprit

Common conflict patterns:

• Caching plugins interfering with dynamic content (forms, carts, login states)
• Multiple SEO plugins fighting over meta tags
• Security plugins blocking AJAX requests
• Optimization plugins breaking JavaScript by combining files incorrectly

White screen of death

The site shows nothing. No error, no content, just white. Or a brief message: "There has been a critical error."

This happens when PHP encounters a fatal error and error display is disabled (which is correct for production — you don't want users seeing error details).

Quick diagnosis:

1. Add define('WP_DEBUG', true); to wp-config.php
2. Refresh the page
3. Read the actual error message

Common causes:

• Plugin or theme fatal error after update
• PHP memory limit exceeded
• Syntax error in functions.php or a plugin file
• PHP version incompatibility

If you can't access the admin:

1. Connect via FTP or file manager
2. Rename the plugins folder to plugins-disabled
3. If the site loads, a plugin caused it
4. Rename back to plugins, then rename individual plugin folders to isolate

Slow site performance

WordPress shouldn't be slow. When it is, the cause is usually identifiable and fixable.

Frontend slow:

• Too many plugins adding scripts and styles
• Large unoptimized images
• No caching enabled
• Cheap shared hosting
• No CDN for static assets

Admin slow:

• Plugins loading heavy features on every admin page
• Large database with years of revisions and spam
• Hosting throttling admin operations
• External API calls on every page load

Diagnosis: Install Query Monitor to see exactly what's slowing down each page — which queries take longest, which plugins add the most load, where time is spent.

Prevention strategies

Before updating anything

1. Backup first — Full site backup, not just database
2. Test on staging — If you have a staging site, update there first
3. Read the changelog — Major version updates may have breaking changes
4. Update one thing at a time — If something breaks, you'll know what caused it

Plugin hygiene

• Deactivate and delete plugins you're not using
• Avoid plugins that haven't been updated in over a year
• Check reviews for compatibility issues before installing
• Prefer plugins with good support and regular updates

Ongoing monitoring

Problems you catch early are easier to fix. A form that stops working is obvious after one lost lead, catastrophic after a hundred.

Set up monitoring that alerts you when:

• The site goes down
• JavaScript errors spike
• Form submissions stop
• Pages slow down significantly

When to get help

Some WordPress problems have straightforward fixes. Others require expertise you may not have.

Try to fix yourself:

• Plugin conflicts (systematic deactivation will find it)
• Form email issues (SMTP plugin solves most cases)
• Caching problems (clear cache, configure properly)
• Simple performance issues (obvious culprits like huge images)

Get help when:

• Custom code is involved and you didn't write it
• Database corruption or migration issues
• Security breaches or malware
• Server configuration beyond your access level
• You've spent more than an hour with no progress

Related pages

Parent: Fixes & Troubleshooting — Step-by-step solutions for common website problems

Child posts:

• Why Your WordPress Form Isn't Sending Emails — The fix that solves 90% of form email problems
• Plugin Conflicts — Systematic approach to finding the culprit

Related topics:

• Error Monitoring — Catch WordPress errors before users report them
• Performance & Uptime — Monitor site health continuously