WordPress White Screen of Death: How to Fix It in 2026

By default, WordPress hides PHP fatal errors from visitors — a security best practice, but it means when something crashes, you get a blank page instead of a message pointing at the file that broke.

Step one is always the same: turn on debug logging so the crash actually writes down what happened.

Edit wp-config.php via SFTP. Above the "That's all, stop editing" line, add:

define('WP_DEBUG', true); define('WP_DEBUG_LOG', true); define('WP_DEBUG_DISPLAY', false);

Reload the white page. Then open /wp-content/debug.log. The fatal error, the file, and the line number are there. Read those three pieces and you'll know exactly which plugin or theme caused it.

If the debug log points at a plugin, or if you can't read it: rename /wp-content/plugins to /wp-content/plugins-off. This deactivates every plugin at once. Reload — if the site returns, one plugin is the cause.

Rename the folder back. Log into wp-admin and activate plugins one at a time, reloading the site after each. The one that brings the white screen back is your suspect. Roll it back to the previous version or replace it.

If plugins aren't the cause, the active theme might be. Via SFTP, rename /wp-content/themes/your-active-theme to something like your-theme-off. WordPress falls back to the most recent default theme (twentytwentysix, twentytwentyfive, etc.) if it's installed.

If the site loads on the default theme, the issue is in your theme's functions.php or a template file — usually after a manual edit or update.

A memory-exhausted script often shows as a white screen. Add to wp-config.php:

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

If you're on shared hosting and the increase doesn't take, ask your host to raise the PHP memory_limit at the server level.

If debug log points at core files, or the site white-screens even on a default theme with all plugins off — the crash is server-level (PHP version incompatibility, corrupted core files, permissions). That's where an engineer with shell access saves you hours.

We fix white screens on care-plan sites within our SLA, or as one-off emergency rescues from $149.