{"id":13814,"date":"2026-01-08T12:50:08","date_gmt":"2026-01-08T12:50:08","guid":{"rendered":"https:\/\/www.copebusiness.com\/?p=13814"},"modified":"2026-02-07T09:50:05","modified_gmt":"2026-02-07T09:50:05","slug":"fix-the-critical-error-in-wordpress","status":"publish","type":"post","link":"https:\/\/www.copebusiness.com\/de\/wordpress\/fix-the-kritische-error-in-wordpress\/","title":{"rendered":"How to Fix the Critical Error in WordPress (Guide)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Encountering the &#8222;There has been a critical error on this website&#8220; message can be alarming\u2014it often locks you out of your admin area and displays a blank page to visitors. This error, introduced in WordPress 5.2, indicates a PHP fatal error that halts site functionality. Common triggers include plugin conflicts, memory limits, or code issues, but the good news is it&#8217;s usually fixable without losing data. At Cope Business, we resolve these errors frequently during our <a href=\"https:\/\/www.copebusiness.com\/technical-seo-services\/technical-seo-audit-service\/\" data-type=\"link\" data-id=\"https:\/\/www.copebusiness.com\/technical-seo-services\/technical-seo-audit-service\/\" target=\"_blank\" rel=\"noreferrer noopener\">technical SEO audit services<\/a>, helping clients restore access and prevent recurrence. This 2026 guide explains the causes and provides step-by-step fixes to get your site back online quickly.<br>Whether you&#8217;re a beginner or experienced user, start with the simplest solutions and work your way down.<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">On this page<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #0a0a0a;color:#0a0a0a\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #0a0a0a;color:#0a0a0a\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.copebusiness.com\/de\/wordpress\/fix-the-kritische-error-in-wordpress\/#Common_Causes_of_the_Critical_Error\" >Common Causes of the Critical Error<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.copebusiness.com\/de\/wordpress\/fix-the-kritische-error-in-wordpress\/#Step-by-Step_Guide_to_Fixing_the_Critical_Error\" >Step-by-Step Guide to Fixing the Critical Error<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.copebusiness.com\/de\/wordpress\/fix-the-kritische-error-in-wordpress\/#Preventing_Future_Critical_Errors\" >Preventing Future Critical Errors<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_Causes_of_the_Critical_Error\"><\/span>Common Causes of the Critical Error<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Plugin or Theme Conflicts<\/strong>: Incompatible or faulty code from recent updates.<\/li>\n\n\n\n<li><strong>PHP Memory Exhaustion<\/strong>: Site exceeds allocated memory.<\/li>\n\n\n\n<li><strong>Corrupted Core Files<\/strong>: Failed updates or hacks.<\/li>\n\n\n\n<li><strong>Server Issues<\/strong>: Hosting problems like resource limits or misconfigurations.<\/li>\n\n\n\n<li><strong>Custom Code Errors<\/strong>: Syntax mistakes in snippets or functions.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">WordPress emails a recovery link to the admin\u2014check your inbox first.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step-by-Step_Guide_to_Fixing_the_Critical_Error\"><\/span>Step-by-Step Guide to Fixing the Critical Error<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. Use WordPress Recovery Mode<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">WordPress sends a recovery email with a link (e.g., \/wp-login.php?action=enter_recovery_mode).<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Click the link to access recovery mode.<\/li>\n\n\n\n<li>Deactivate problematic plugins\/themes from the dashboard.<\/li>\n\n\n\n<li>Exit recovery mode once resolved.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">If no email arrives, fix email delivery with WP Mail SMTP.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Deactivate All Plugins<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Plugins are the top culprit.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Access via FTP (use FileZilla) or hosting file manager.<\/li>\n\n\n\n<li>Navigate to \/wp-content\/ and rename &#8222;plugins&#8220; to &#8222;plugins_old&#8220;.<\/li>\n\n\n\n<li>Reload your site\u2014if it works, reactivate plugins one by one to find the issue.<\/li>\n\n\n\n<li>Update or replace the faulty plugin.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">3. Switch to a Default Theme<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Theme conflicts can crash sites.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Via FTP, go to \/wp-content\/themes\/ and rename your active theme folder.<\/li>\n\n\n\n<li>WordPress falls back to a default like Twenty Twenty-Six.<\/li>\n\n\n\n<li>If resolved, update or switch themes.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">4. Increase PHP Memory Limit<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Low memory causes fatal errors.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Edit wp-config.php via FTP: <\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>Add define('WP_MEMORY_LIMIT', '256M'); before the \"stop editing\" line.<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Save and reload.<\/li>\n\n\n\n<li>If ineffective, contact your host to raise server limits.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">5. Enable Debugging and Check Error Logs<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Uncover the exact cause.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In wp-config.php, set <\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>define('WP_DEBUG', true); define('WP_DEBUG_LOG', true); define('WP_DEBUG_DISPLAY', false);.<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reload the site\u2014errors log to \/wp-content\/debug.log.<\/li>\n\n\n\n<li>Review the log for clues (e.g., plugin names).<\/li>\n\n\n\n<li>Fix the indicated issue and disable debugging.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">6. Reinstall WordPress Core Files<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Corrupted files from failed updates.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Download the latest WordPress zip from wordpress.org.<\/li>\n\n\n\n<li>Unzip and upload all folders\/files except wp-content (overwrite existing).<\/li>\n\n\n\n<li>Run \/wp-admin\/upgrade.php if prompted.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">7. Restore from Backup<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If other fixes fail.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Use your backup plugin (e.g., UpdraftPlus) or hosting backup.<\/li>\n\n\n\n<li>Restore to a previous working state.<\/li>\n\n\n\n<li>Test and identify what caused the error (e.g., recent update).<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">8. Contact Your Hosting Provider<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Server-side issues like mod_security rules or resource caps.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Provide error details from logs.<\/li>\n\n\n\n<li>Ask them to check server errors or whitelist your IP.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Preventing_Future_Critical_Errors\"><\/span>Preventing Future Critical Errors<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Enable auto-updates for minor releases.<\/li>\n\n\n\n<li>Test updates on staging first.<\/li>\n\n\n\n<li>Use reliable plugins\/themes from trusted sources.<\/li>\n\n\n\n<li>Regular backups and security scans (Wordfence recommended).<\/li>\n\n\n\n<li>Monitor with tools like Site Health.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Most errors resolve with plugin deactivation or memory increases\u2014start there.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Facing this error or need proactive prevention? <a href=\"https:\/\/www.copebusiness.com\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/www.copebusiness.com\/\" rel=\"noreferrer noopener\">Contact Cope Business<\/a> for a free technical SEO audit\u2014we&#8217;ll diagnose the issue and optimize your site for reliability.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Encountering the &bdquo;There has been a critical error on this website&ldquo; 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