{"id":13808,"date":"2026-01-08T12:13:21","date_gmt":"2026-01-08T12:13:21","guid":{"rendered":"https:\/\/www.copebusiness.com\/?p=13808"},"modified":"2026-02-07T10:28:24","modified_gmt":"2026-02-07T10:28:24","slug":"fix-wordpress-updating-failed-publishing-failed-error","status":"publish","type":"post","link":"https:\/\/www.copebusiness.com\/es\/wordpress\/ficticio-palabra-palabra-palabra-capitada-error\/","title":{"rendered":"How to Fix WordPress \u00abUpdating Failed\u00bb and \u00abPublishing Failed\u00bb Errors"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"13808\" class=\"elementor elementor-13808\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3653e8b8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3653e8b8\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3c86df14\" data-id=\"3c86df14\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-61ad025a elementor-widget elementor-widget-text-editor\" data-id=\"61ad025a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\n<p class=\"wp-block-paragraph\">The \u00abUpdating failed\u00bb or \u00abPublishing failed\u00bb error in the WordPress block editor can be frustrating\u2014preventing you from saving or publishing posts and pages. This issue typically stems from problems with the REST API, which the block editor relies on for saving content. In 2026, with Gutenberg as the default editor, these errors remain common but are usually easy to resolve. At Cope Business, we encounter and fix these regularly during our <a href=\"https:\/\/www.copebusiness.com\/technical-seo-services\/technical-seo-audit-service\/\" target=\"_blank\" rel=\"noreferrer noopener\" data-type=\"link\" data-id=\"https:\/\/www.copebusiness.com\/technical-seo-services\/technical-seo-audit-service\/\">technical SEO audit services<\/a>, ensuring clients can edit content smoothly without disruptions.<\/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=\"Alternar tabla de contenidos\"><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\/es\/wordpress\/ficticio-palabra-palabra-palabra-capitada-error\/#Common_Causes_of_the_Error\" >Common Causes of the 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\/es\/wordpress\/ficticio-palabra-palabra-palabra-capitada-error\/#10_Proven_Fixes_for_UpdatingPublishing_Failed_Errors\" >10 Proven Fixes for Updating\/Publishing Failed Errors<\/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\/es\/wordpress\/ficticio-palabra-palabra-palabra-capitada-error\/#Prevention_Tips_for_the_Future\" >Prevention Tips for the Future<\/a><\/li><\/ul><\/nav><\/div>\n\n\n<p class=\"wp-block-paragraph\">This guide covers the most common causes and 10 proven fixes, from simple checks to advanced troubleshooting.<\/p>\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_Causes_of_the_Error\"><\/span>Common Causes of the Error<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<ul class=\"wp-block-list\">\n<li><strong>REST API Issues<\/strong>: Blocked or corrupted API endpoints.<\/li>\n\n<li><strong>SSL\/HTTPS Problems<\/strong>: Mixed content or invalid certificates.<\/li>\n\n<li><strong>Plugin\/Theme Conflicts<\/strong>: Incompatible code blocking API requests.<\/li>\n\n<li><strong>Server Configuration<\/strong>: Mod_security rules, firewalls, or low PHP limits.<\/li>\n\n<li><strong>Permalinks Corruption<\/strong>: Broken rewrite rules.<\/li>\n\n<li><strong>Browser or Cache Problems<\/strong>: Local issues interfering with requests.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">The error often includes \u00abThe response is not a valid JSON response\u00bb for more clues.<\/p>\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"10_Proven_Fixes_for_UpdatingPublishing_Failed_Errors\"><\/span>10 Proven Fixes for Updating\/Publishing Failed Errors<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<h3 class=\"wp-block-heading\">1. Check Your Internet Connection and Site URL<\/h3>\n\n<p class=\"wp-block-paragraph\">Basic but often overlooked:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Ensure your connection is stable.<\/li>\n\n<li>In <strong>Settings &gt; General<\/strong>, confirm WordPress Address (URL) and Site Address (URL) match and use HTTPS.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">2. Clear Browser Cache and Cookies<\/h3>\n\n<p class=\"wp-block-paragraph\">Cached data can interfere with API requests.<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Clear cache\/cookies or test in incognito mode.<\/li>\n\n<li>Try a different browser.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">3. Switch to a Default Theme Temporarily<\/h3>\n\n<p class=\"wp-block-paragraph\">Theme conflicts are common.<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Switch to Twenty Twenty-Six or another default theme via <strong>Appearance &gt; Themes<\/strong>.<\/li>\n\n<li>Test saving a post\u2014if it works, your theme is the culprit (contact theme developer or switch).<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">4. Deactivate All Plugins<\/h3>\n\n<p class=\"wp-block-paragraph\">Plugins often block REST API.<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Go to <strong>Plugins &gt; Installed Plugins<\/strong> and deactivate all.<\/li>\n\n<li>Test saving\u2014if successful, reactivate one by one to find the conflicting plugin.<\/li>\n\n<li>Common culprits: Security plugins (Wordfence, iThemes), caching, or optimization tools.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">For safety, use FTP to rename the plugins folder if you can&#8217;t access admin.<\/p>\n\n<h3 class=\"wp-block-heading\">5. Re-Save Permalinks<\/h3>\n\n<p class=\"wp-block-paragraph\">Corrupted permalinks break API routes.<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Go to <strong>Settings &gt; Permalinks<\/strong>.<\/li>\n\n<li>Without changing settings, click \u00abSave Changes\u00bb to flush rewrite rules.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">This fixes many REST API-related errors instantly.<\/p>\n\n<h3 class=\"wp-block-heading\">6. Check and Fix SSL\/HTTPS Issues<\/h3>\n\n<p class=\"wp-block-paragraph\">Mixed content prevents secure API calls.<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Ensure your site uses valid HTTPS (free via Let&#8217;s Encrypt).<\/li>\n\n<li>Install <strong>Really Simple SSL<\/strong> plugin to force HTTPS and fix mixed content.<\/li>\n\n<li>Check for HTTP resources in <strong>Tools &gt; Site Health &gt; Status<\/strong>.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">See our <a href=\"https:\/\/www.copebusiness.com\/security\/add-ssl-and-https-in-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\" data-type=\"link\" data-id=\"https:\/\/www.copebusiness.com\/technical-seo\/add-ssl-and-https-in-wordpress\/\">SSL setup guide<\/a> for details.<\/p>\n\n<h3 class=\"wp-block-heading\">7. Disable Security Plugin Rules or Firewall Temporarily<\/h3>\n\n<p class=\"wp-block-paragraph\">Overzealous security can block API.<\/p>\n\n<ul class=\"wp-block-list\">\n<li>In Wordfence\/Sucuri, whitelist your IP or disable learning mode.<\/li>\n\n<li>Check hosting firewall (e.g., SiteGround&#8217;s SG Security) for blocked REST API requests.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">8. Increase PHP Memory Limit<\/h3>\n\n<p class=\"wp-block-paragraph\">Low memory causes failed requests.<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Add to wp-config.php: define(&#8216;WP_MEMORY_LIMIT&#8217;, &#8216;256M&#8217;);.<\/li>\n\n<li>Or contact your host to increase limits.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">9. Check Server Error Logs<\/h3>\n\n<p class=\"wp-block-paragraph\">For deeper issues:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Access error logs via hosting panel (cPanel &gt; Errors).<\/li>\n\n<li>Look for REST API or JSON-related errors.<\/li>\n\n<li>Common fixes: Mod_security rule disabling (ask host) or PHP version upgrade.<\/li>\n<\/ul>\n\n<h3 class=\"wp-block-heading\">10. Switch to Classic Editor Temporarily<\/h3>\n\n<p class=\"wp-block-paragraph\">As a workaround:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Install <strong>Classic Editor<\/strong> plugin.<\/li>\n\n<li>Use it until the block editor issue is resolved.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">This confirms if Gutenberg-specific problems exist.<\/p>\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Prevention_Tips_for_the_Future\"><\/span>Prevention Tips for the Future<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<ul class=\"wp-block-list\">\n<li>Keep WordPress, themes, and plugins updated.<\/li>\n\n<li>Use reputable hosting with good support (SiteGround recommended).<\/li>\n\n<li>Install only trusted plugins.<\/li>\n\n<li>Enable auto-updates for minor releases.<\/li>\n\n<li>Regular backups with UpdraftPlus.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Most errors are resolved with the first 5 fixes\u2014start there.<\/p>\n\n<p class=\"wp-block-paragraph\">Experiencing this error or other WordPress issues? <a href=\"https:\/\/www.copebusiness.com\/\" target=\"_blank\" rel=\"noreferrer noopener\" data-type=\"link\" data-id=\"https:\/\/www.copebusiness.com\/\">Contact Cope Business<\/a> for a free technical SEO audit\u2014we&#8217;ll diagnose and fix it quickly to get your site back to full functionality.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>The &laquo;Updating failed&raquo; 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