04Mar 2026 by Web Developer No Comments

Fix 500 Internal Server Error in WordPress

Seeing a blank page or “500 Internal Server Error” on your WordPress website?

Don’t panic. This is one of the most common WordPress errors. In this guide, you’ll learn exactly how to fix 500 Internal Server Error in WordPress step by step.

Whether you are a beginner or developer, this guide will help you quickly restore your website.

What Causes 500 Internal Server Error in WordPress?

If you are trying to fix 500 Internal Server Error in WordPress, the key is identifying whether the issue is caused by plugins, themes, or server configuration.

Understanding the root cause is important before trying fixes. The 500 Internal Server Error in WordPress usually occurs due to server-side issues. Unlike 404 errors, this error does not clearly tell you what is wrong.

Common technical causes include:

Corrupted core WordPress files
Incorrect file permissions
Exceeded PHP execution time
Large or faulty plugin updates
Incompatible PHP version

In most cases, the issue is not permanent and can be fixed within minutes using the right troubleshooting method.

How to Fix 500 Internal Server Error in WordPress

Follow these solutions one by one.

Step 1 – Check and Regenerate .htaccess File

Login to cPanel or FTP
Locate .htaccess in the root folder
Rename it to:

.htaccess_old

Go to WordPress Dashboard → Settings → Permalinks
Click “Save Changes” to generate a new file

Regenerating the .htaccess file is often the fastest way to fix 500 Internal Server Error in WordPress websites.

Step 2 – Deactivate All Plugins

If you can access wp-admin:

Go to Plugins → Select All → Deactivate

If not, rename the plugins folder via FTP:

wp-content/plugins → plugins_old

If the site works, a plugin is causing the issue. Activate one by one to find the problem.

Many website owners successfully fix 500 Internal Server Error in WordPress simply by identifying a conflicting plugin.

Step 3 – Increase PHP Memory Limit

Open wp-config.php and add:

define(‘WP_MEMORY_LIMIT’, ‘256M’);

This helps if the error is caused by memory exhaustion.

Step 4 – Switch to Default Theme

Rename your active theme folder via FTP.

WordPress will automatically switch to a default theme like:

Twenty Twenty-Four
Twenty Twenty-Three

If the error disappears, your theme has issues.

Step 5 – Enable Debug Mode

Add this to wp-config.php:

define(‘WP_DEBUG’, true);

define(‘WP_DEBUG_LOG’, true);

define(‘WP_DEBUG_DISPLAY’, false);

Check:

wp-content/debug.log

This file will show the exact error.

When to Contact Hosting Support

If none of the above fixes work:

Server may have incorrect PHP version
File permissions may be wrong
Server modules may be disabled

Contact your hosting provider and ask them to check server logs.

How PHP Version Affects 500 Errors

Sometimes the issue happens after updating WordPress or installing a new plugin. If your hosting is running an outdated PHP version, compatibility issues may trigger a 500 error.

WordPress officially recommends using the latest supported PHP version.

You can check your PHP version in:

cPanel → Select PHP Version

If your site is running below PHP 8.0, consider upgrading after confirming theme and plugin compatibility.

Check File Permissions

Incorrect file permissions can also trigger a 500 Internal Server Error in WordPress.

Correct permissions should be:

Folders: 755
Files: 644

You can verify this using:

cPanel File Manager
FTP Client

If permissions are set to 777, it may cause server security blocks.

How 500 Errors Affect SEO and Business

If your website shows a 500 error:

Google bots cannot crawl your pages
Rankings may temporarily drop
Users leave immediately
Bounce rate increases

If the issue remains for a long time, search engines may reduce your visibility.

For business websites, even 1 hour of downtime can mean lost leads and sales.

That’s why fixing 500 Internal Server Error in WordPress quickly is essential.

7 Ways to Prevent 500 Internal Server Error

Always update WordPress carefully
Avoid installing too many plugins
Use reliable hosting
Keep regular backups
Test updates on staging site
Monitor server resources
Remove unused themes and plugins

Prevention is always better than emergency fixes.

To fix 500 Internal Server Error in WordPress, start by regenerating .htaccess, disabling plugins, increasing memory, and checking themes.

Most issues are solved within 10–20 minutes using the steps above.

By following the steps above, you can confidently fix 500 Internal Server Error in WordPress without hiring a developer.

If you need professional WordPress debugging support, feel free to reach out.

FAQ

What causes 500 Internal Server Error in WordPress?

Usually plugin conflicts, corrupted .htaccess file, or memory limit issues.

Can a plugin cause 500 error?

Yes. A poorly coded or incompatible plugin can trigger the error.

How to Fix 500 Internal Server Error in WordPress (Proven Guide 2026)