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WordPress White Screen / HTTP 500 – Fix Step by Step

Quick answer: White screen or HTTP 500 = almost always a PHP error or plugin conflict. Read error log, disable plugins, increase PHP memory limit.

If you landed here: Your site shows nothing (WSOD), HTTP 500/503 or "Internal Server Error".

5-minute checklist

  1. Read error log in Plesk → Logs → Error Log
  2. Disable plugins – rename wp-content/plugins to plugins_off
  3. Test theme – activate default theme via FTP
  4. Rename .htaccess → test site
  5. Increase PHP memory_limit to 256M in Plesk

More codes: HTTP status codes explained

Related

Frequently asked questions (FAQ)

What does HTTP 500 Internal Server Error mean?
Web server can't deliver the page – usually PHP error, plugin crash, bad .htaccess or memory limit reached.
WordPress white screen – fastest fix?
Rename plugins folder via FTP to plugins_backup → test site. Works? → plugin fault, restore one by one.
500 after PHP version change?
PHP 8.x breaks old plugins. In Plesk revert to 7.4/8.1 or update plugin.

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