WordPress White Screen How to Fix: 7 Proven Methods

What the WordPress White Screen Actually Means

The white screen is a symptom, not a diagnosis. When WordPress or PHP encounters a fatal error during page generation, the script stops executing. If error display is disabled in php.ini (the production default), the browser receives an incomplete HTTP response with no body content. That's the white screen.

Fatal errors happen for specific reasons: memory exhaustion, syntax errors in PHP files, undefined functions from missing plugins, or corrupted files. The error exists in the server log even when the screen is blank.

You might see the white screen on the front end, wp-admin, or both. Front-end-only issues usually point to theme code. Admin-only problems often involve plugin conflicts. A complete white screen across all pages suggests a core issue or memory limit.

Enable Debug Mode and Read the Error Log

Start by making errors visible. Connect via FTP or your hosting file manager and open wp-config.php in the root directory. Find the line that says:

Change it to:

Add these lines right after that existing define statement:

Save the file. Reload your site. If the white screen now shows error messages, you have your answer immediately. The error message tells you which file and line number failed.

If nothing appears on screen, check the debug.log file that WordPress just created in wp-content/. Download it and open it in a text editor. Look for the most recent timestamp and read the fatal error message. It will name the plugin or theme file that broke.

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

Deactivate All Plugins Without Admin Access

If plugins caused the issue, you can't access wp-admin to deactivate them normally. You need to do it via FTP or database.

FTP method: connect to your site and navigate to wp-content/. Rename the plugins folder to plugins-disabled. WordPress will see no plugins directory and deactivate everything. Reload your site. If it works, rename the folder back to plugins, then rename individual plugin folders one at a time to isolate the problem plugin.

Database method: log into phpMyAdmin or your database client. Open the wp_options table (prefix might differ). Find the row where option_name equals 'active_plugins'. Edit that row and change the option_value to an empty serialized array: a:0:{}

That deactivates every plugin instantly. Reload the site. If it loads, go to wp-admin and reactivate plugins one by one until the white screen returns. That's your conflict.

Switch to a Default Theme

Theme code runs on every page load. A syntax error or missing function in functions.php can cause a white screen.

Via FTP, navigate to wp-content/themes/. Find your currently active theme folder. Rename it to something like themename-disabled. WordPress can't find the active theme anymore, so it falls back to a default theme like Twenty Twenty-Four.

Reload the site. Does it work now? Your theme was the problem. Check the theme's functions.php for recent edits or plugin dependencies. If you added custom code recently, remove it and test again.

A corrupted theme file can also cause this. Download a fresh copy of the theme from the original source, delete the broken folder via FTP, and upload the clean version.

Increase the PHP Memory Limit

Memory exhaustion is common on shared hosting. WordPress tries to load too much data or a plugin runs a heavy query, PHP runs out of memory, and the script dies.

Open wp-config.php again and add this line before the 'That's all, stop editing!' comment:

This sets the WordPress memory limit to 256 MB. For larger sites, use 512M. Save and reload.

If your host enforces a lower limit in php.ini, this won't help. Check your server error log (usually in the hosting control panel under 'Error Logs') for messages like 'Allowed memory size of X bytes exhausted'. If the limit is too low, contact support or upgrade your hosting plan.

Some shared hosts limit memory to 128M. That's barely enough for a modern WordPress install with a page builder and a few plugins.

• define('WP_MEMORY_LIMIT', '256M');

Clear All Caching Layers

Caching plugins, object cache, and CDN edge caches can serve a stale white screen even after you fix the underlying issue.

If you use a caching plugin like WP Super Cache or W3 Total Cache, delete the cache via FTP. The cache directory is usually wp-content/cache/. Delete everything in that folder.

Object cache (Redis or Memcached) can also hold bad data. If your host provides a cache flush button in the control panel, use it. Otherwise, restart the Redis or Memcached service if you have shell access.

If you use Cloudflare or another CDN, log into the dashboard and purge the entire cache. Wait 60 seconds, then test your site again in an incognito browser window to avoid local browser cache.

Check Server Error Logs for PHP Fatal Errors

WordPress debug.log might not catch everything. The server's own error log records all PHP fatal errors regardless of WordPress settings.

Log into your hosting control panel. Look for 'Error Logs', 'Logs', or 'Log Viewer'. Open the PHP error log. Sort by timestamp and find entries from the time the white screen started.

Common messages to look for: 'Call to undefined function', 'syntax error', 'Allowed memory size exhausted', 'Maximum execution time exceeded'. The log will name the exact file and line number.

If you see 'require' or 'include' errors, a file is missing or the path is wrong. If you see 'Class not found', a plugin dependency is missing or a namespace conflict exists.

Test with a Fresh WordPress Core Installation

If none of the above worked, the core files might be corrupted. Download a fresh copy of WordPress from wordpress.org matching your current version number.

Via FTP, delete these folders from your site: wp-admin and wp-includes. Do not delete wp-content or wp-config.php.

Extract the fresh WordPress download on your computer. Upload the wp-admin and wp-includes folders from the fresh copy to your site, overwriting nothing because you just deleted the old ones.

Reload the site. This replaces all core files without touching your themes, plugins, or configuration. If the white screen persists, the issue is in wp-content (your themes or plugins) or your database.

As a last resort, restore from your most recent backup and apply updates one at a time to identify what triggered the error.