{"id":1757,"date":"2023-11-23T05:20:28","date_gmt":"2023-11-23T05:20:28","guid":{"rendered":"https:\/\/certera.com\/kb\/?p=1757"},"modified":"2024-10-08T04:39:21","modified_gmt":"2024-10-08T04:39:21","slug":"how-to-fix-err_ssl_server_cert_bad_format-error-6-ways","status":"publish","type":"post","link":"https:\/\/certera.com\/kb\/how-to-fix-err_ssl_server_cert_bad_format-error-6-ways\/","title":{"rendered":"How to Fix ERR_SSL_SERVER_CERT_BAD_FORMAT Error? [6 Ways]"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Have you ever faced the ERR_SSL_SERVER_CERT_BAD_FORMAT error? If not, let me inform you it&#8217;s quite irritating and frustrating. <strong><em>This error mainly occurs in the browser used by 2.65 billion+ people &#8211; &#8220;Google Chrome.&#8221;<\/em><\/strong> <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The ERR_SSL_SERVER_CERT_BAD_FORMAT error indicates a problem with the website&#8217;s &#8211; &#8220;SSL Certificate.&#8221; SSL certificates create a secure tunnel for your browser-server conversations and protect your information in transit and rest from anyone trying to peek in.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trusted authorities like Certera, Comodo, Sectigo, DigiCert, GeoTrust, etc., usually issue SSL certificates. Browsers recognize and trust such <a href=\"https:\/\/certera.com\/\">SSL certificates (issued by trusted CAs)<\/a>. However, on some websites, self-signed SSL certificates are installed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The website&#8217;s owners make these SSL certs not issued by a certificate authority after thorough validation. Browsers don&#8217;t trust such (self-signed) SSL certificates, and when you access a site that&#8217;s using it, you witness the ERR_SSL_SERVER_CERT_BAD_FORMAT error displayed on your screen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here&#8217;s a crisp answer if you still need clarification about what the ERR_SSL_SERVER_CERT_BAD_FORMAT error is.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is SSL_SERVER_CERT_BAD_FORMAT Error?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The ERR_SSL_SERVER_CERT_BAD_FORMAT error is a browser error that occurs when there&#8217;s an issue with a &#8211; website&#8217;s SSL certificate. The issue indicates that the browser cannot correctly verify or trust the website&#8217;s SSL certificate, often because it is self-signed or improperly configured.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why does this Error Occurs?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Apart from the use of a self-signed SSL certificate, the ERR_SSL_SERVER_CERT_BAD_FORMAT error can occur due to &#8220;n&#8221; number of other reasons. <strong>Here are some of those:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Incorrect System Date and Time<\/li>\n\n\n\n<li>Corrupted SSL State within the Browser<\/li>\n\n\n\n<li>Outdated Browsers or Operating Systems<\/li>\n\n\n\n<li>Cache Memory and Browsing Data, etc.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Steps to Resolve ERR SSL_SERVER_CERT_BAD_FORMAT Error<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Here are the methods that you can use to fix the issue:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Install SSL from a <a href=\"https:\/\/certera.com\/ssl\">reputed Certificate Authority<\/a><\/li>\n\n\n\n<li>Add the website to the trusted site&#8217;s security zone<\/li>\n\n\n\n<li>Correct your system&#8217;s date and time settings<\/li>\n\n\n\n<li>Use Google Chrome Properties<\/li>\n\n\n\n<li>Clear SSL State Cache<\/li>\n\n\n\n<li>Update browsers and operating systems<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Let&#8217;s explore each method in depth.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Method 1: Install SSL from a Reputed Certificate Authority<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A valid SSL certificate from a recognized Certificate Authority like Certera, Sectigo, DigiCert, or GeoTrust is essential for establishing trust. Browsers trust such SSL certificates instead of self-signed ones.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Before installing one, <a href=\"https:\/\/certera.com\/buy-ssl-certificates\">purchase an SSL cert<\/a> from a reputable, trusted CA. Once bought, create a Certificate Signing Request and submit it to the CA for validation. Once the CA validates the request and verifies that all the details are &#8211; correct and updated, it issues the SSL certificate within minutes or days, depending on the validation level. The CA will send the SSL cert to the registered email ID.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">All that&#8217;s left now is downloading and installing the &#8211; .ca bundle file, .crt file, and private key on your server. <a href=\"https:\/\/certera.com\/kb\/ssl-installation\/\">Installing steps vary depending on the server<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Note: <\/strong>This method is only for website owners.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Method 2: Add the Website to the Trusted Site&#8217;s Security Zone<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Sometimes, adding your website to your browser&#8217;s list of trusted sites can <a href=\"https:\/\/certera.com\/kb\/ssl-errors\/\">resolve SSL errors<\/a>. This tells your browser to trust the site explicitly. Follow the steps mentioned below to accomplish the same:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Click <strong>Search<\/strong>, placed on the taskbar.<\/li>\n\n\n\n<li>Type <strong>Internet Options<\/strong> and press <strong>Enter<\/strong>.<\/li>\n\n\n\n<li>The <strong>Internet Properties<\/strong> window will appear.<\/li>\n\n\n\n<li>Click on the <strong>Security <\/strong>tab.<\/li>\n\n\n\n<li>Under the <strong>Select a zone to view or change security settings<\/strong> section, click the <strong>Trusted Sites<\/strong> option.<\/li>\n\n\n\n<li>Click <strong>Sites<\/strong>.<\/li>\n\n\n\n<li>The <strong>Trusted sites<\/strong> window will appear.<\/li>\n\n\n\n<li>In the <strong>Add this website to the zone<\/strong> box, type the <strong>URL <\/strong>on which you are getting the <strong>ERR_SSL_SERVER_CERT_BAD_FORMAT<\/strong> error.<\/li>\n\n\n\n<li>Click <strong>Add<\/strong>.<\/li>\n\n\n\n<li>Click <strong>Close<\/strong>.<\/li>\n\n\n\n<li>Try re-accessing the website.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Method 3: Correct Your System&#8217;s Date and Time Settings<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ensure the date and time on your device are correct, as an incorrect system time can cause HTTPS traffic to fail and trigger the error in discussion.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Follow the steps given below to update the date and time:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Click <strong>Search<\/strong>, placed on the taskbar.<\/li>\n\n\n\n<li>Type <strong>Date &amp; time<\/strong> <strong>settings<\/strong> and press <strong>Enter<\/strong>.<\/li>\n\n\n\n<li>The Settings window will appear.<\/li>\n\n\n\n<li>Toggle the switch on against the <strong>Set time automatically <\/strong>option.<\/li>\n\n\n\n<li>Toggle the switch on against the <strong>Set time zone automatically<\/strong> option.<\/li>\n\n\n\n<li>Try re-accessing the site.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Method 4: Use Google Chrome Properties<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Modifying Google Chrome&#8217;s properties can sometimes bypass SSL errors, including those in question. But this should be done with &#8211; &#8220;caution,&#8221; as it can compromise security. <strong>Follow these steps:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Open a fresh tab in <strong>Google Chrome<\/strong>.<\/li>\n\n\n\n<li>Click the <strong>Customize and control Google Chrome<\/strong> icon (three vertical dots).<\/li>\n\n\n\n<li>From the list, click <strong>Settings<\/strong>.<\/li>\n\n\n\n<li>The <strong>Settings <\/strong>window will appear.<\/li>\n\n\n\n<li>In the left pane, click <strong>System<\/strong>.<\/li>\n\n\n\n<li>In the right pane, click the <strong>Open your computer\u2019s proxy settings <\/strong>option.<\/li>\n\n\n\n<li>The <strong>Network &amp; Internet<\/strong> window will appear.<\/li>\n\n\n\n<li>Under the <strong>Advanced Network Settings<\/strong> section, click <strong>Network and Sharing Center<\/strong>.<\/li>\n\n\n\n<li>The <strong>Network and Sharing Center <\/strong>window will appear.<\/li>\n\n\n\n<li>Click <strong>Internet Options<\/strong>.<\/li>\n\n\n\n<li>Click on the <strong>Security <\/strong>tab.<\/li>\n\n\n\n<li>Under the <strong>Select a zone to view or change security settings<\/strong> section, click the <strong>Trusted Sites<\/strong> option.<\/li>\n\n\n\n<li>Click <strong>Sites<\/strong>.<\/li>\n\n\n\n<li>The <strong>Trusted sites<\/strong> window will appear.<\/li>\n\n\n\n<li>In the <strong>Add this website to the zone<\/strong> box, type the <strong>URL <\/strong>on which you are getting the <strong>ERR_SSL_SERVER_CERT_BAD_FORMAT<\/strong> error.<\/li>\n\n\n\n<li>Click <strong>Add<\/strong>.<\/li>\n\n\n\n<li>Click <strong>Close<\/strong>.<\/li>\n\n\n\n<li>Re-access the site.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Method 5: Clear SSL State Cache<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Browsers tend to cache SSL certificates to expedite page loading. But sometimes, because of these cached SSL certificate data, the browser cannot fetch the updated certificates, resulting in an ERR_SSL_SERVER_CERT_BAD_FORMAT error.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Follow the steps mentioned below to clear the browser&#8217;s SSL State cache:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Click <strong>Search<\/strong>, placed on the taskbar.<\/li>\n\n\n\n<li>Type <strong>Internet Options <\/strong>and press <strong>Enter.<\/strong><\/li>\n\n\n\n<li>The <strong>Internet Properties <\/strong>window will appear.<\/li>\n\n\n\n<li>Navigate to the <strong>Content <\/strong>tab.<\/li>\n\n\n\n<li>Under the <strong>Certificates <\/strong>section, click the <strong>Clear SSL Slate <\/strong>button.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Method 6: Update Browsers and Operating Systems<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Older versions might not support newer SSL protocols and lead to mismatches. These mismatches ultimately lead to the ERR_SSL_SERVER_CERT_BAD_FORMAT error. Therefore, regularly update the OS and browser. Follow the steps mentioned below to update both of these:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Here&#8217;s how to update your browser:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Open a fresh tab in <strong>Chrome<\/strong>.<\/li>\n\n\n\n<li>Click on <strong>Customize and control Google Chrome<\/strong> icon (three vertical dots).<\/li>\n\n\n\n<li>From the list, select <strong>Help<\/strong>, and click <strong>About Google Chrome<\/strong>.<\/li>\n\n\n\n<li>The update will start automatically. It will only happen if you are not using the &#8211; latest version.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Here&#8217;s how to update your Operating System:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Click <strong>Search <\/strong>placed on the taskbar.<\/li>\n\n\n\n<li>Type <strong>Windows Update settings <\/strong>and press <strong>Enter.<\/strong><\/li>\n\n\n\n<li>The <strong>Settings <\/strong>window will appear.<\/li>\n\n\n\n<li>Click on the <strong>Check for updates<\/strong> button.<\/li>\n\n\n\n<li>Once it&#8217;s updated, re-access the site.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Several effective strategies exist to fix this issue, from installing SSL certs from trusted certificate authorities to updating your browser and operating system. Remember, keeping your system&#8217;s date and time accurate, clearing the SSL state cache, and adding websites to trusted zones can also help.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Have you ever faced the ERR_SSL_SERVER_CERT_BAD_FORMAT error? If not, let me inform you it&#8217;s quite irritating and frustrating. This error mainly occurs in the browser used by 2.65 billion+ people &#8211; &#8220;Google Chrome.&#8221; The ERR_SSL_SERVER_CERT_BAD_FORMAT error indicates a problem with the website&#8217;s &#8211; &#8220;SSL Certificate.&#8221; SSL certificates create a secure tunnel for your browser-server conversations<span class=\"morelink d-block mt-3\"><a href=\"https:\/\/certera.com\/kb\/how-to-fix-err_ssl_server_cert_bad_format-error-6-ways\/\">Read More<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":1778,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[282,283],"class_list":["post-1757","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ssl-errors","tag-err_ssl_server_cert_bad_format","tag-self-signed-ssl-certificate-error","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Fix ERR_SSL_SERVER_CERT_BAD_FORMAT Error?<\/title>\n<meta name=\"description\" content=\"Majorly err_ssl_server_cert_bad_format occurs whenever you visit website that has a self-signed SSL\/TLS certificate. 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