{"id":21826,"date":"2026-11-06T10:15:02","date_gmt":"2026-11-06T07:15:02","guid":{"rendered":"https:\/\/sunucun.com.tr\/blog\/fix-err-failed\/"},"modified":"2026-11-06T10:15:02","modified_gmt":"2026-11-06T07:15:02","slug":"fix-err-failed","status":"publish","type":"post","link":"https:\/\/sunucun.com.tr\/blog\/fix-err-failed\/","title":{"rendered":"What Is ERR_FAILED and How Do You Fix It in Chrome?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_89 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<span class=\"ez-toc-title-toggle\"><\/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:\/\/sunucun.com.tr\/blog\/fix-err-failed\/#What_Does_ERR_FAILED_Mean\" >What Does ERR_FAILED Mean?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/sunucun.com.tr\/blog\/fix-err-failed\/#Causes_of_the_Error\" >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-3\" href=\"https:\/\/sunucun.com.tr\/blog\/fix-err-failed\/#How_to_Fix_ERR_FAILED\" >How to Fix ERR_FAILED<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/sunucun.com.tr\/blog\/fix-err-failed\/#1_Open_the_Page_in_an_Incognito_Window\" >1. Open the Page in an Incognito Window<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/sunucun.com.tr\/blog\/fix-err-failed\/#2_Clear_the_Cache_and_Site_Data\" >2. Clear the Cache and Site Data<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/sunucun.com.tr\/blog\/fix-err-failed\/#3_Check_Security_Software_and_Proxy_Settings\" >3. Check Security Software and Proxy Settings<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/sunucun.com.tr\/blog\/fix-err-failed\/#4_Reset_Chrome_Settings_or_Try_a_New_Profile\" >4. Reset Chrome Settings or Try a New Profile<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/sunucun.com.tr\/blog\/fix-err-failed\/#5_Reset_Network_Settings\" >5. Reset Network Settings<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/sunucun.com.tr\/blog\/fix-err-failed\/#For_Developers_net_ERR_FAILED_in_the_Console\" >For Developers: net::ERR_FAILED in the Console<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/sunucun.com.tr\/blog\/fix-err-failed\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\"><strong>ERR_FAILED<\/strong> is a <strong>generic error<\/strong> code that Chrome shows when it fails to load a page or resource. The browser then shows <code>ERR_FAILED<\/code> on the &#8220;This site can&#8217;t be reached&#8221; or &#8220;This page isn&#8217;t working&#8221; screen, and in the Console tab of the developer tools it appears as <code>net::ERR_FAILED<\/code>. Because the code is generic, it has no single cause; in this guide we go through the most common causes and fixes in order.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Does_ERR_FAILED_Mean\"><\/span>What Does ERR_FAILED Mean?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p class=\"wp-block-paragraph\">Chrome&#8217;s network layer usually reports why a request failed with a specific code (for example ERR_CONNECTION_TIMED_OUT for a timeout). ERR_FAILED means the request failed but no more specific code was given. To fix it, you first need to work out whether the problem is in the browser, on the computer or on the site.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Causes_of_the_Error\"><\/span>Causes of the Error<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<ul class=\"wp-block-list\"><li><strong>Browser extensions:<\/strong> Ad blockers, privacy and VPN extensions that block or modify requests.<\/li><li><strong>Damaged cache or profile:<\/strong> Corrupted cache files or a damaged Chrome user profile.<\/li><li><strong>Security software and firewalls:<\/strong> Antivirus web protection can cut Chrome&#8217;s connection.<\/li><li><strong>Proxy settings:<\/strong> If an unreachable proxy is configured, requests fail.<\/li><li><strong>Service Worker problems:<\/strong> If a site&#8217;s background script returns a faulty response, the page may not open.<\/li><li><strong>CORS blocking (for developers):<\/strong> When a request to another domain is blocked because the server does not send the required CORS headers, the console shows <code>net::ERR_FAILED<\/code>.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Fix_ERR_FAILED\"><\/span>How to Fix ERR_FAILED<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Open_the_Page_in_an_Incognito_Window\"><\/span>1. Open the Page in an Incognito Window<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<p class=\"wp-block-paragraph\">Open an incognito window with <kbd>Ctrl<\/kbd> + <kbd>Shift<\/kbd> + <kbd>N<\/kbd> and try the site. Extensions are off by default in incognito windows. If the page opens, the problem is an extension: turn extensions off one by one on the <code>chrome:\/\/extensions<\/code> page to find the problem one.<\/p>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Clear_the_Cache_and_Site_Data\"><\/span>2. Clear the Cache and Site Data<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<p class=\"wp-block-paragraph\">At <code>chrome:\/\/settings\/clearBrowserData<\/code>, clear &#8220;Cached images and files&#8221; and &#8220;Cookies and other site data&#8221;. If only one site has the problem, deleting that site&#8217;s data from the site information icon in the address bar may be enough; this also removes the site&#8217;s Service Worker registration.<\/p>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Check_Security_Software_and_Proxy_Settings\"><\/span>3. Check Security Software and Proxy Settings<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<p class=\"wp-block-paragraph\">Briefly turn off your antivirus web protection or HTTPS scanning and try again. On Windows, if a manual proxy is set under <strong>Settings &gt; Network &amp; Internet &gt; Proxy<\/strong>, turn it off. Make sure Chrome is not blocked in the firewall.<\/p>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Reset_Chrome_Settings_or_Try_a_New_Profile\"><\/span>4. Reset Chrome Settings or Try a New Profile<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<p class=\"wp-block-paragraph\">Use &#8220;Restore settings to their original defaults&#8221; on the <code>chrome:\/\/settings\/reset<\/code> page. This does not delete your bookmarks or saved passwords. If the problem continues, create a new Chrome profile and try again; if it works in the new profile, the old profile may be damaged.<\/p>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Reset_Network_Settings\"><\/span>5. Reset Network Settings<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<p class=\"wp-block-paragraph\">Open Command Prompt as administrator, run the commands below, then restart the computer:<\/p>\n\n\n<pre class=\"wp-block-code\"><code>ipconfig \/flushdns\nnetsh winsock reset\nnetsh int ip reset<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"For_Developers_net_ERR_FAILED_in_the_Console\"><\/span>For Developers: net::ERR_FAILED in the Console<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p class=\"wp-block-paragraph\">If the console shows <code>net::ERR_FAILED<\/code> together with &#8220;has been blocked by CORS policy&#8221;, the request was blocked by the browser&#8217;s CORS rules. The server receiving the request must return the <code>Access-Control-Allow-Origin<\/code> header with your site&#8217;s origin and answer preflight (<code>OPTIONS<\/code>) requests correctly. The problem is not in the browser but in the configuration of the API being called.<\/p>\n\n\n<p class=\"wp-block-paragraph\">For similar cases where the server closes the connection, see our guide on <a href=\"https:\/\/sunucun.com.tr\/blog\/fix-err-connection-closed\/\">ERR_CONNECTION_CLOSED<\/a>, and for cases where it is reset, see <a href=\"https:\/\/sunucun.com.tr\/blog\/err_connection_reset-en\/\">ERR_CONNECTION_RESET<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p class=\"wp-block-paragraph\">ERR_FAILED is a generic error code and is usually caused by extensions, a damaged cache, security software or proxy settings. Testing in an incognito window quickly shows where the problem comes from. If you are a developer, look at the CORS messages in the console and the headers of the server being called.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ERR_FAILED is a generic error code that Chrome shows when it fails to load a page or resource. The browser then shows ERR_FAILED on the &#8220;This site can&#8217;t be reached&#8221; or &#8220;This page isn&#8217;t working&#8221; screen, and in the Console tab of the developer tools it appears as net::ERR_FAILED. Because the code is generic, it&hellip;<\/p>\n","protected":false},"author":1,"featured_media":21837,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[1521],"tags":[],"class_list":["post-21826","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-teknoloji"],"_links":{"self":[{"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/posts\/21826","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/comments?post=21826"}],"version-history":[{"count":0,"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/posts\/21826\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/media\/21837"}],"wp:attachment":[{"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/media?parent=21826"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/categories?post=21826"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/tags?post=21826"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}