{"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 \u2013 This means Firefox doesn\u2019t trust the certificate authority that issued the website\u2019s SSL certificate. This could happen if the CA is not included in Firefox\u2019s list of trusted CAs.<\/li>\n\n\n\n<li>SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE \u2013 This indicates that the certificate authority\u2019s certificate used to sign the website\u2019s certificate has expired. This makes the website certificate invalid.<\/li>\n\n\n\n<li>SEC_ERROR_UNTRUSTED_ISSUER \u2013 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SEC_ERROR_EXPIRED_CERTIFICATE \u2013 The website sent an expired SSL certificate that is no longer valid.<\/li>\n\n\n\n<li>SEC_ERROR_REVOKED_CERTIFICATE \u2013 The certificate has been revoked by the issuing authority, meaning it is no longer trusted.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 \u2013 Firefox can\u2019t understand the certificate file or information for compatibility reasons.<\/li>\n\n\n\n<li>SEC_ERROR_BAD_SIGNATURE \u2013 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\u2019s default trust store. Expired certificates also occur frequently on sites that don\u2019t 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\u2019s root certificate:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Get the CA\u2019s root certificate that issued the website\u2019s certificate.<\/li>\n\n\n\n<li>Go to Firefox Preferences > Privacy & Security > View Certificates > 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 \u201cAdvanced\u201d then \u201cAdd Exception\u2026\u201d 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 \u2013 this will disable modern certificate validation.<\/li>\n<\/ul>\n\n\n\n<p>However bypassing the error reduces security, so it\u2019s 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\u2019s default trust store. Expired certificates also occur frequently on sites that don\u2019t 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}]}}