A practical troubleshooting checklist
How to Fix the WordPress Critical Error
A safe first-response checklist for the WordPress 'critical error' message. Start with evidence and a backup before changing production files.
A practical troubleshooting checklist
A safe first-response checklist for the WordPress 'critical error' message. Start with evidence and a backup before changing production files.
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01
Record the exact error and when it began. Note recent plugin, theme, PHP or WordPress updates.
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02
Confirm a usable backup or hosting snapshot before disabling code or restoring files.
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03
Check the hosting PHP error log. If needed, enable WP_DEBUG_LOG temporarily without displaying errors publicly.
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04
On staging where possible, disable the most recently changed plugin or theme and retest. Avoid bulk deletion.
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05
Check PHP version, memory limits, theme compatibility and database or hosting errors.
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06
Verify admin login, public pages, forms and WooCommerce checkout if present; remove temporary debug settings.
When to ask for help
If you cannot access the site or the cause is unclear, send the URL and sanitized error log for a scoped diagnosis.
Do not include passwords or payment credentials in the first message.
WordPress Emergency Repair