What does the WordPress white screen of death mean?

March 21, 2026

The short answer

The WordPress white screen of death means your site hit a fatal error that prevents it from loading, so the browser shows a completely blank page instead.

Why does it happen?

WordPress runs on PHP code, and when something breaks badly enough, the whole page fails to render. Common causes include:

  • A broken plugin — a recent plugin update or install conflicts with your site
  • A broken theme — your active theme has a bug or incompatibility
  • Running out of memory — your site doesn’t have enough server memory to process the page
  • A corrupted core file — a WordPress update didn’t finish cleanly
  • A PHP error in custom code — manual edits to theme or plugin files introduced a mistake

How to fix it

Work through these steps in order, stopping when the site comes back:

  1. Clear your browser cache — sometimes the white screen is a stale cached page
  2. Disable all plugins — rename the wp-content/plugins folder via FTP or your hosting file manager to plugins-disabled, then reload your site
  3. Switch to a default theme — rename your active theme’s folder inside wp-content/themes to force WordPress to fall back to a default theme
  4. Increase the memory limit — add define('WP_MEMORY_LIMIT', '256M'); to your wp-config.php file
  5. Turn on debug mode — add define('WP_DEBUG', true); to wp-config.php to see the actual error message instead of a blank screen
  6. Contact your hosting provider — if nothing else works, they can check server logs for the exact error

When should you worry?

A one-time white screen after updating a plugin is usually an easy fix. But if it keeps happening:

  • Your hosting plan may be too small — you might need more memory or a better server
  • Your site could be hacked — malware sometimes causes fatal errors
  • Your WordPress version may be outdated — old versions are more prone to conflicts