{"id":5834,"date":"2025-03-31T11:40:03","date_gmt":"2025-03-31T19:40:03","guid":{"rendered":"https:\/\/cheapsslsecurity.com\/blog\/?p=5834"},"modified":"2025-06-19T04:01:11","modified_gmt":"2025-06-19T12:01:11","slug":"fix-err_certificate_transparency_required-error-in-chrome","status":"publish","type":"post","link":"https:\/\/cheapsslsecurity.com\/blog\/fix-err_certificate_transparency_required-error-in-chrome\/","title":{"rendered":"How to Fix the &#8216;ERR_CERTIFICATE_TRANSPARENCY_REQUIRED&#8217; Error in Chrome &amp; Firefox"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">If a certificate authority issues an SSL certificate without adding it to the logs this can trigger certain browser errors. One such common error is ERR_CERTIFICATE_TRANSPARENCY_REQUIRED (or &#8216;NET::ERR_CERTIFICATE_TRANSPARENCY_REQUIRED&#8217;) in Google Chrome and Mozilla Firefox.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This error is quite common; if you\u2019re not familiar with SSL-related errors, you might wonder if something is wrong with your browser or internet connection. The issue is most likely caused by an incorrectly issued SSL certificate on the website, which means it\u2019s an error the website owner needs to fix. (In rare cases it can be caused by issues on the user\u2019s end.) <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">But what if you&#8217;re the site owner who needs to fix this issue on your site? We\u2019ll offer suggestions for both scenarios.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-white-color has-text-color has-link-color wp-elements-8316013ea824fc2778f07762629b868e\">How to Fix Other SSL and Certificate-Related Errors<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Want to learn about <a href=\"https:\/\/cheapsslsecurity.com\/blog\/how-to-fix-common-security-certificate-error-issues\/\">10 common SSL\/TLS security certificate errors and issues<\/a> in Firefox and Chrome and what you can do to fix them? Check out our related resource.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Is Certificate Transparency?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Certificate transparency is an initiative to monitor and revoke incorrectly issued SSL certificates to increase safety and security online. It does so by making the SSL certificates of these sites open to be scrutinized by <a href=\"https:\/\/cheapsslsecurity.com\/blog\/what-is-a-certificate-authority-ca\/\">certification authorities<\/a> (CAs), users, domain owners, and clients. This makes it faster to detect and revoke SSL certificates issued to hackers and other bad actors.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Certificate transparency is a mandatory requirement for all SSL certificate authorities. This means whenever they issue an SSL certificate, they must add it to one or more public certificate transparency logs. If the certificate doesn&#8217;t make its way onto the CT log, it will cause you a lot of headaches. <\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">Examples of Certificate Transparency-Related Error Codes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Chrome: <\/strong><a href=\"https:\/\/cheapsslsecurity.com\/blog\/fix-err_certificate_transparency_required-error-in-chrome\/\">ERR_CERTIFICATE_TRANSPARENCY_REQUIRED<\/a><\/li>\n\n\n\n<li><strong>Firefox: <\/strong>MOZILLA_PKIX_ERROR_INSUFFICIENT_CERTIFICATE_TRANSPARENCY<\/li>\n\n\n\n<li><strong>OpenSSL: <\/strong><a href=\"https:\/\/x509errors.org\/#:~:text=X509_\u00adV_\u00adERR_\u00adINVALID_\u00adCA\">X509_V_ERR_INVALID_CA<\/a><\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">But what does this error look like in the wild? Here&#8217;s a quick look at the ERR_CERTIFICATE_TRANSPARENCY REQUIRED in Google Chrome:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"562\" src=\"https:\/\/cheapsslsecurity.com\/blog\/wp-content\/uploads\/2019\/06\/chrome_certificate_ssl_error_certificate_transparency-1024x562.png\" alt=\"\" class=\"wp-image-8414\" srcset=\"https:\/\/cheapsslsecurity.com\/blog\/wp-content\/uploads\/2019\/06\/chrome_certificate_ssl_error_certificate_transparency-1024x562.png 1024w, https:\/\/cheapsslsecurity.com\/blog\/wp-content\/uploads\/2019\/06\/chrome_certificate_ssl_error_certificate_transparency-300x165.png 300w, https:\/\/cheapsslsecurity.com\/blog\/wp-content\/uploads\/2019\/06\/chrome_certificate_ssl_error_certificate_transparency.png 1194w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Image caption: <em>This screenshot shows how the certificate transparency error displays in Google Chrome<\/em>.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"975\" height=\"598\" src=\"https:\/\/cheapsslsecurity.com\/blog\/wp-content\/uploads\/2019\/06\/mozilla-pkix-error_insufficient_certificate_transparency.jpg\" alt=\"An example of the certificate transparency-related error in Firefox: &quot;MOZILLA_PKIX_ERROR_INSUFFICIENT_CERTIFICATE_TRANSPARENCY&quot;\" class=\"wp-image-8415\" srcset=\"https:\/\/cheapsslsecurity.com\/blog\/wp-content\/uploads\/2019\/06\/mozilla-pkix-error_insufficient_certificate_transparency.jpg 975w, https:\/\/cheapsslsecurity.com\/blog\/wp-content\/uploads\/2019\/06\/mozilla-pkix-error_insufficient_certificate_transparency-300x184.jpg 300w\" sizes=\"(max-width: 975px) 100vw, 975px\" \/><figcaption class=\"wp-element-caption\"><em>Image caption: The screenshot shows Firefox&#8217;s version of the public key pinning security certificate error.<\/em><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What Causes This Error<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Whenever a CA issues an SSL\/TLS certificate, it adds it to one or more public <a href=\"https:\/\/cheapsslsecurity.com\/blog\/what-is-certificate-transparency-ct-how-does-it-work\/\">certificate transparency<\/a> (CT) logs so that any CA, user, and domain owner can view it. Certificate logs are records of submitted SSL\/TLS certificates and pre-certificates (i.e., an indication that a CA will submit a certificate soon). This is a mandatory action aimed at simplifying the detection and revocation of misissued certificates and those issued to unauthorized third parties.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When you encounter this error on your domain, it means the SSL\/TLS certificate it\u2019s using hasn&#8217;t been added to the public certificate transparency logs and, therefore, was incorrectly issued (thus, it\u2019s untrusted).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix &#8216;ERR_CERTIFICATE_TRANSPARENCY_REQUIRED&#8217; On Your Site<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use crt.sh to verify whether your domain\u2019s certificate is included in a <a href=\"https:\/\/certificate.transparency.dev\/howctworks\/\">CT log<\/a>.<\/li>\n\n\n\n<li>Purchase a new <a href=\"https:\/\/cheapsslsecurity.com\/sslbrands\/digicert.html\">SSL\/TLS certificate<\/a> from a CA or reseller such as CheapSSLSecurity.com that adds every certificate it issues to at least one public CT log list.<\/li>\n\n\n\n<li>Revoke your SSL\/TLS certificate and ask your CA provider to reissue a new one.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Request a <a href=\"https:\/\/chromeenterprise.google\/policies\/#CertificateTransparencyEnforcementDisabledForUrls\">certificate transparency exemption policy<\/a>. Beware, it works only for Chrome corporate-managed devices.<\/p>\n\n\n\n<div class=\"graysection\">\n<h2>Save up to 89% on SSL certificates<\/h2>\n<p>We offer the lowest prices on SSL certificates from Comodo, GeoTrust, Thawte, Sectigo, Symantec, and RapidSSL. Save up to 89% by purchasing direct from us!<br>\n<a class=\"comparebtn\" href=\"https:\/\/cheapsslsecurity.com\/\">Buy SSL Certificates at Only $4.97<\/a><\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">How to Get Rid of ERR_CERTIFICATE_TRANSPARENCY_REQUIRED Error for Chrome Users<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There are a few tricks which you can try if you feel that the error is occurring because of some bug in your desktop or browser. Let\u2019s take a look at what those are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Update Google Chrome (recommended).<\/strong> Make sure that your system has the latest version of Chrome installed. To update your Chrome browser, go to <strong>Settings<\/strong>, select <strong>Help<\/strong>, and click on <strong>About Google Chrome<\/strong>. The browser will check for updates automatically and notify you if one is available.<\/li>\n\n\n\n<li><strong>Clear the SSL State (recommended).<\/strong> Clearing the SSL certificate cache of your browser can help you to get rid of the error ERR_CERTIFICATE_TRANSPARENCY_REQUIRED or related other SSL-related errors. If you are using Windows:\n<ul class=\"wp-block-list\">\n<li>Go to <strong>Internet Properties<\/strong> (i.e., <strong>Internet Options<\/strong>)<\/li>\n\n\n\n<li>Navigate to the <strong>Content<\/strong> tab.<\/li>\n\n\n\n<li><strong>Clear SSL State<\/strong> by clicking on the option.<\/li>\n\n\n\n<li>Select<strong> Apply<\/strong> and click on <strong>OK<\/strong>.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">There&#8217;s a third option you&#8217;ll sometimes see online (i.e., Disable your firewall), but this is not a recommended approach. This is because your firewall may inspect SSL\/TLS traffic which can trigger unusual SSL errors, including the certificate transparency error. So while disabling your firewall allows you to check whether the problem persists, it also leaves you vulnerable to cyber threats.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We hope the article was helpful to you in resolving the ERR_CERTIFICATE_TRANSPARENCY_REQUIRED error.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Related Resources<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/cheapsslsecurity.com\/blog\/ssl-certificate-problem-unable-to-get-local-issuer-certificate\/\" target=\"_blank\" rel=\"noopener noreferrer\">Guide for the \u201cSSL Certificate Problem: Unable to get Local Issuer Certificate\u201d<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/cheapsslsecurity.com\/blog\/ssl_error_rx_record_too_long\/\" target=\"_blank\" rel=\"noopener noreferrer\">SSL_Error_rx_record_too_long \u2013 The Trouble Shooting Guide<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/cheapsslsecurity.com\/blog\/err-connection-refused-error-fixing-guide\/\" target=\"_blank\" rel=\"noopener noreferrer\">ERR_CONNECTION_REFUSED in Chrome \u2013 Fixing Guide by SSLSecurity<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/cheapsslsecurity.com\/blog\/how-to-fix-err_ssl_version_or_cipher_mismatch-error\/\" target=\"_blank\" rel=\"noopener noreferrer\">How to Fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH Error<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/cheapsslsecurity.com\/blog\/your-connection-is-not-private-error-a-fixing-guide-for-all-devices\/\" target=\"_blank\" rel=\"noopener noreferrer\">Your Connection is not Private Error \u2013 A Fixing Guide for all devices<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/cheapsslsecurity.com\/blog\/apache-server-common-ssl-errors-and-troubleshooting-guide\/\" target=\"_blank\" rel=\"noopener noreferrer\">Apache Server: Common SSL Errors and Troubleshooting Guide<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/cheapsslsecurity.com\/blog\/mixed-content-error-how-to-disable-it-on-chrome\/\" target=\"_blank\" rel=\"noopener noreferrer\">What is Mixed Content Error &amp; How to Disable it on Chrome<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/cheapsslsecurity.com\/blog\/troubleshoot-secure-connection-failed-error-firefox\/\" target=\"_blank\" rel=\"noopener noreferrer\">Troubleshoot \u2018Secure Connection Failed\u2019 Error in Firefox<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><em><strong>Editor&#8217;s Note:<\/strong> This article was originally published in 2019. However, it&#8217;s been updated as of March 31, 2025 to include newer and more current information. <\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>If a certificate authority issues an SSL certificate without adding it to the logs this can trigger certain browser errors. One such common error is ERR_CERTIFICATE_TRANSPARENCY_REQUIRED (or &#8216;NET::ERR_CERTIFICATE_TRANSPARENCY_REQUIRED&#8217;) in Google Chrome and Mozilla Firefox. This error is quite common; if you\u2019re not familiar with SSL-related errors, you might wonder if something is wrong with your<\/p>\n","protected":false},"author":8,"featured_media":8421,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[5],"tags":[981],"class_list":["post-5834","post","type-post","status-publish","format-standard","has-post-thumbnail","category-ssl-pki","tag-certificate-transparency"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ERR_CERTIFICATE_TRANSPARENCY_REQUIRED Error in Chrome<\/title>\n<meta name=\"description\" content=\"Learn what the &#039;ERR_CERTIFICATE_TRANSPARENCY_REQUIRED&#039; error is and explore a few methods for how to fix it in Google Chrome and Firefox.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cheapsslsecurity.com\/blog\/fix-err_certificate_transparency_required-error-in-chrome\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ERR_CERTIFICATE_TRANSPARENCY_REQUIRED Error in Chrome\" \/>\n<meta property=\"og:description\" content=\"Learn what the &#039;ERR_CERTIFICATE_TRANSPARENCY_REQUIRED&#039; error is and explore a few methods for how to fix it in Google Chrome and Firefox.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cheapsslsecurity.com\/blog\/fix-err_certificate_transparency_required-error-in-chrome\/\" \/>\n<meta property=\"og:site_name\" content=\"Savvy Security\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/cheapsslsecurities\" \/>\n<meta property=\"article:published_time\" content=\"2025-03-31T19:40:03+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-19T12:01:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cheapsslsecurity.com\/blog\/wp-content\/uploads\/2025\/03\/err_certificate_transparency_required-feature.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Savvy Security\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@sslsecurity\" \/>\n<meta name=\"twitter:site\" content=\"@sslsecurity\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Savvy Security\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/cheapsslsecurity.com\\\/blog\\\/fix-err_certificate_transparency_required-error-in-chrome\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/cheapsslsecurity.com\\\/blog\\\/fix-err_certificate_transparency_required-error-in-chrome\\\/\"},\"author\":{\"name\":\"Savvy Security\",\"@id\":\"https:\\\/\\\/cheapsslsecurity.com\\\/blog\\\/#\\\/schema\\\/person\\\/1ce9a5743b7f25b5be6e4972864b4493\"},\"headline\":\"How to Fix the &#8216;ERR_CERTIFICATE_TRANSPARENCY_REQUIRED&#8217; 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