The WordPress White Screen of Death happens when PHP fails silently due to:

• Plugin conflicts
• Theme errors
• PHP fatal errors
• Memory limit exhaustion
• Faulty custom code (functions.php)
• Corrupted core files
• Cache conflicts (Cloudflare, LiteSpeed, etc.)

Let’s fix it using professional troubleshooting steps.

Edit your wp-config.php file and add/modify:

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

Now check:

• /wp-content/debug.log → shows the actual error

Most errors will point to:

• a specific plugin
• a theme file
• a PHP function
• a missing file

Clear all types of cache:

• WordPress cache plugin (LiteSpeed, WP Rocket, W3 Total Cache, Breeze, etc.)
• Hosting cache (LiteSpeed, NGINX cache, Varnish)
• Cloudflare cache
• Browser cache

Then reload your site in incognito mode.

If wp-admin works:

1. Go to Plugins → Installed Plugins
2. Select all → Deactivate

If wp-admin is also blank:

1. Open File Manager → /wp-content/
2. Rename plugins → plugins-disabled
3. Reload site

If site loads → plugin conflict confirmed.

Find the faulty plugin:

• Restore folder name
• Rename individual plugin folders one by one

Steps:

1. Go to /wp-content/themes
2. Rename your active theme folder
3. WordPress automatically activates a default theme

If the site opens → the theme is the culprit.

Common theme-related errors:

• functions.php syntax errors
• Missing template files
• Conflicted scripts
• PHP code pasted incorrectly

Add this to wp-config.php:

define( 'WP_MEMORY_LIMIT', '512M' );
    

Also increase memory in hosting panel:

• PHP INI editor
• MultiPHP INI editor
• Cloud hosting settings

This instantly fixes most Elementor/WooCommerce white screens.

Steps to safely replace core files:

1. Download fresh WordPress from wordpress.org
2. Upload wp-admin & wp-includes folders
3. Overwrite old files (but NOT wp-content)

This fixes missing or corrupted WordPress core files.

Check these files for recent changes:

• functions.php
• custom plugin files
• child theme customizations

Common mistakes include:

• PHP syntax errors
• Copy-paste code from tutorials
• Wrong curly braces
• Undefined functions

Disable temporarily:

• Cloudflare (set DNS to DNS Only)
• LiteSpeed Cache
• WP Rocket
• Asset CleanUp
• SG Optimizer
• Hummingbird

Minified JavaScript or merged CSS can cause white screens after updates.

Check logs in:

• public_html/error_log
• cPanel → Errors
• LiteSpeed Logs
• Apache/Nginx logs (Cloud servers)

Look for:

• Memory Fatal Errors
• PHP Fatal Errors
• Theme/Plugin syntax issues
• File permission errors

Correct permissions:

• Folders: 755
• Files: 644
• wp-config.php: 600