500 Internal Server Error – how to fix

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Overview

A 500 Internal Server Error is a general server-side error that means something is wrong with your website, but the server can’t display a more specific message. It is usually caused by a broken configuration, plugin issue, or file error.

Common Causes

  • Corrupted `.htaccess` file
  • Faulty WordPress plugin or theme
  • Incorrect file permissions
  • PHP memory limit issues
  • Broken or missing core files

Step-by-Step Fixes

1. Check your .htaccess file (most common fix)

  1. Log in to DirectAdmin File Manager
  2. Go to `public_html`
  3. Find `.htaccess`

Fix options:

  • Rename it to `.htaccess_old`
  • Then refresh your website

If the site works after this, regenerate the file in WordPress:

  • Go to Settings → Permalinks → Save Changes

2. Disable plugins (WordPress sites)

A bad plugin is a very common cause.

  1. Go to File Manager
  2. Navigate to: `wp-content/plugins`
  3. Rename the folder to: `plugins_disabled`

Check your website again. If it works, a plugin is the cause.

3. Switch to a default theme

  1. Go to: `wp-content/themes`
  2. Rename your active theme folder

WordPress will switch to a default theme automatically.

4. Check file permissions

Incorrect permissions can break your site:

  • Folders: 755
  • Files: 644

You can adjust this in File Manager.

5. Increase PHP memory limit

If your site is overloaded:

  1. Open `wp-config.php`
  2. Add this line:

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

6. Check error logs

DirectAdmin provides logs that can help identify the exact issue:

  • Look for Error Logs in your control panel
  • This will show the specific cause of the 500 error

Important Notes

  • Always back up your site before making changes
  • The error is usually caused by recent changes (plugin, theme, or file edit)
  • Fixing one issue at a time helps identify the cause

Common Issues & Fixes

Site broke after plugin install

  • Disable the plugin via File Manager

Error after updating theme

  • Switch back to default theme

Still getting 500 error

  • Check error logs or contact support

Need Help?

If your website is still showing a 500 Internal Server Error, our support team can review your logs and fix the issue quickly for you.

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