{"id":2607,"date":"2023-12-02T14:01:30","date_gmt":"2023-12-02T12:01:30","guid":{"rendered":"https:\/\/itsimple.info\/?p=2607"},"modified":"2023-12-02T16:42:26","modified_gmt":"2023-12-02T14:42:26","slug":"mozilla-firefox-most-common-certificate-errors","status":"publish","type":"post","link":"https:\/\/itsimple.info\/?p=2607","title":{"rendered":"Mozilla Firefox Most Common Certificate errors"},"content":{"rendered":"\n<p>Some of the most common SSL\/TLS certificate errors you may encounter in Firefox include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SEC_ERROR_UNKNOWN_ISSUER &#8211; This means Firefox doesn&#8217;t trust the certificate authority that issued the website&#8217;s SSL certificate. This could happen if the CA is not included in Firefox&#8217;s list of trusted CAs.<\/li>\n\n\n\n<li>SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE &#8211; This indicates that the certificate authority&#8217;s certificate used to sign the website&#8217;s certificate has expired. This makes the website certificate invalid.<\/li>\n\n\n\n<li>SEC_ERROR_UNTRUSTED_ISSUER &#8211; Similar to UNKNOWN_ISSUER, this means the issuing CA is not trusted by Firefox for some reason.<\/li>\n\n\n\n<li>SEC_ERROR_EXPIRED_CERTIFICATE &#8211; The website sent an expired SSL certificate that is no longer valid.<\/li>\n\n\n\n<li>SEC_ERROR_REVOKED_CERTIFICATE &#8211; The certificate has been revoked by the issuing authority, meaning it is no longer trusted.<\/li>\n\n\n\n<li>SEC_ERROR_INCOMPATIBLE_SOFTWARE &#8211; Firefox can&#8217;t understand the certificate file or information for compatibility reasons.<\/li>\n\n\n\n<li>SEC_ERROR_BAD_SIGNATURE &#8211; The certificate has an invalid digital signature, meaning it failed integrity checks.<\/li>\n<\/ul>\n\n\n\n<p>The most common tends to be the UNKNOWN_ISSUER or UNTRUSTED_ISSUER errors when the CA is not in Firefox&#8217;s default trust store. Expired certificates also occur frequently on sites that don&#8217;t renew their certs on time.<\/p>\n\n\n\n<p>there are a few potential ways to bypass the SEC_ERROR_UNKNOWN_ISSUER error in Firefox:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Install the certificate authority&#8217;s root certificate:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Get the CA&#8217;s root certificate that issued the website&#8217;s certificate.<\/li>\n\n\n\n<li>Go to Firefox Preferences &gt; Privacy &amp; Security &gt; View Certificates &gt; Authorities.<\/li>\n\n\n\n<li>Import the root certificate.<\/li>\n\n\n\n<li>This will make Firefox trust that CA for issuing certificates.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>Create an exception for the site:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Click &#8220;Advanced&#8221; then &#8220;Add Exception&#8230;&#8221; on the error page.<\/li>\n\n\n\n<li>Confirm the security exception to permanently allow the site with that certificate.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>Disable certificate validation temporarily:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In the Firefox address bar, type <code>about:config<\/code> and hit Enter.<\/li>\n\n\n\n<li>Search for <code>security.tls.version.enable-deprecated<\/code> and set the value to <code>true<\/code>.<\/li>\n\n\n\n<li>Reload the site &#8211; this will disable modern certificate validation.<\/li>\n<\/ul>\n\n\n\n<p>However bypassing the error reduces security, so it&#8217;s best to only do so temporarily or if you understand the risks with that specific certificate. Getting a proper trusted certificate is the most secure long-term solution.<\/p>\n\n\n\n<p> <\/p>\n\n\n\n<figure class=\"wp-block-pullquote has-vivid-green-cyan-color has-text-color has-link-color has-x-large-font-size wp-elements-4468abd7e813da663fc6115cbdab8a80\"><blockquote><p>Good Luck<\/p><\/blockquote><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Some of the most common SSL\/TLS certificate errors you may encounter in Firefox include: The most common tends to be the UNKNOWN_ISSUER or UNTRUSTED_ISSUER errors when the CA is not in Firefox&#8217;s default trust store. Expired certificates also occur frequently on sites that don&#8217;t renew their certs on time. there are a few potential ways [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,4,12,14],"tags":[],"class_list":["post-2607","post","type-post","status-publish","format-standard","hentry","category-security","category-tech","category-tutorials","category-windows"],"_links":{"self":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/posts\/2607","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2607"}],"version-history":[{"count":0,"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/posts\/2607\/revisions"}],"wp:attachment":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2607"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2607"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2607"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}