https://sslguides.com/ Practical guides for installing, migrating to, and troubleshooting SSL/TLS certificates. en-us https://sslguides.com/articles/fix-connection-not-private-android.html https://sslguides.com/articles/fix-connection-not-private-android.html Same underlying causes as desktop, with one Android-specific wrinkle worth checking. Troubleshooting Thu, 06 Aug 2026 00:00:00 +0000 https://sslguides.com/articles/dv-ov-ev-certificates.html https://sslguides.com/articles/dv-ov-ev-certificates.html Three validation levels, three different amounts of paperwork — and what each one actually proves to a visitor. SSL Basics Wed, 05 Aug 2026 00:00:00 +0000 https://sslguides.com/articles/what-is-certificate-pinning.html https://sslguides.com/articles/what-is-certificate-pinning.html A stricter trust model used mostly in mobile apps — and a common cause of mysterious connection failures. SSL Basics Wed, 05 Aug 2026 00:00:00 +0000 https://sslguides.com/articles/does-https-affect-seo.html https://sslguides.com/articles/does-https-affect-seo.html Google confirmed it as a ranking signal in 2014 — the more interesting question is how much it still moves the needle. SSL Basics Tue, 04 Aug 2026 00:00:00 +0000 https://sslguides.com/articles/fix-ssl-error-handshake-failure-openssl.html https://sslguides.com/articles/fix-ssl-error-handshake-failure-openssl.html Reading the specific alert OpenSSL reports narrows the cause far faster than guessing. Troubleshooting Tue, 04 Aug 2026 00:00:00 +0000 https://sslguides.com/articles/force-https-joomla.html https://sslguides.com/articles/force-https-joomla.html Joomla's Force HTTPS setting works — until your server config disagrees with it. Here's the fix. HTTPS Migration Mon, 03 Aug 2026 00:00:00 +0000 https://sslguides.com/articles/history-netscape-original-ssl.html https://sslguides.com/articles/history-netscape-original-ssl.html Built by a small team in the early 1990s to make e-commerce on the web plausible at all. SSL History Mon, 03 Aug 2026 00:00:00 +0000 https://sslguides.com/articles/fix-err-cert-date-invalid.html https://sslguides.com/articles/fix-err-cert-date-invalid.html Either the certificate is expired, or the visitor's device clock is wrong. Troubleshooting Mon, 03 Aug 2026 00:00:00 +0000 https://sslguides.com/articles/ssl-termination-at-load-balancer.html https://sslguides.com/articles/ssl-termination-at-load-balancer.html Terminate once, at the edge, and let backend servers stay simpler. How-To Guides Sun, 02 Aug 2026 00:00:00 +0000 https://sslguides.com/articles/test-tls-protocol-cipher-support-openssl.html https://sslguides.com/articles/test-tls-protocol-cipher-support-openssl.html Confirm exactly which TLS versions your server accepts, one command per version. How-To Guides Sat, 01 Aug 2026 00:00:00 +0000 https://sslguides.com/articles/flame-malware-md5-forgery.html https://sslguides.com/articles/flame-malware-md5-forgery.html A nation-state-grade attack that used a broken hash function to forge a Microsoft-trusted certificate. SSL History Sat, 01 Aug 2026 00:00:00 +0000 https://sslguides.com/articles/fix-certificate-expired-when-it-isnt.html https://sslguides.com/articles/fix-certificate-expired-when-it-isnt.html Almost always caching — check what's actually being served, not what you assume is being served. Troubleshooting Sat, 01 Aug 2026 00:00:00 +0000 https://sslguides.com/articles/ecommerce-https-migration-pci.html https://sslguides.com/articles/ecommerce-https-migration-pci.html For a store handling payments, HTTPS migration intersects with compliance requirements that aren't optional. HTTPS Migration Fri, 31 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/https-redirect-nodejs-express.html https://sslguides.com/articles/https-redirect-nodejs-express.html A small piece of middleware — but only the right piece, depending on where TLS actually terminates. HTTPS Migration Fri, 31 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/fixing-redirect-loops-after-https.html https://sslguides.com/articles/fixing-redirect-loops-after-https.html Almost always one of three causes — here's how to tell which one you've got. HTTPS Migration Fri, 31 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/https-for-local-development.html https://sslguides.com/articles/https-for-local-development.html Sometimes plain localhost isn't enough — some browser APIs specifically require a secure context. How-To Guides Fri, 31 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/history-free-ssl-before-lets-encrypt.html https://sslguides.com/articles/history-free-ssl-before-lets-encrypt.html Free certificates existed before 2015 — just not at the scale or automation that changed the industry. SSL History Fri, 31 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/how-browsers-decide-trust.html https://sslguides.com/articles/how-browsers-decide-trust.html A checklist your browser runs through in milliseconds, every single time you load a page. SSL Basics Thu, 30 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/what-is-lets-encrypt.html https://sslguides.com/articles/what-is-lets-encrypt.html A nonprofit CA that made HTTPS free and automated — and quietly became the most-used certificate authority on the internet. SSL Basics Wed, 29 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/https-redirect-iis.html https://sslguides.com/articles/https-redirect-iis.html No built-in toggle — the redirect lives in an XML rewrite rule inside web.config. HTTPS Migration Wed, 29 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/history-superfish-lenovo-scandal.html https://sslguides.com/articles/history-superfish-lenovo-scandal.html 2015 — when pre-installed adware quietly undermined HTTPS for every affected laptop's owner. SSL History Wed, 29 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/diagnosing-ssl-with-openssl-playbook.html https://sslguides.com/articles/diagnosing-ssl-with-openssl-playbook.html A handful of commands that answer almost every "why is this certificate broken" question directly. Troubleshooting Wed, 29 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/set-up-hsts-preloading-step-by-step.html https://sslguides.com/articles/set-up-hsts-preloading-step-by-step.html A checklist before submitting, since removal from the list is slow and painful. How-To Guides Tue, 28 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/fix-nodejs-unable-to-verify-leaf-signature.html https://sslguides.com/articles/fix-nodejs-unable-to-verify-leaf-signature.html Node's trust store doesn't have the certificate chain it needs — check the actual chain, don't disable verification. Troubleshooting Tue, 28 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/https-subdomains-different-servers.html https://sslguides.com/articles/https-subdomains-different-servers.html Each server needs its own valid certificate — a wildcard doesn't magically cover infrastructure it isn't installed on. HTTPS Migration Mon, 27 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/https-redirect-heroku.html https://sslguides.com/articles/https-redirect-heroku.html Automatic Certificate Management plus one line of middleware, depending on your stack. HTTPS Migration Mon, 27 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/what-is-sni.html https://sslguides.com/articles/what-is-sni.html The trick that lets one IP address serve HTTPS for hundreds of unrelated domains. SSL Basics Sun, 26 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/does-ssl-affect-speed.html https://sslguides.com/articles/does-ssl-affect-speed.html Yes, measurably — and the number is much smaller than most people assume, especially since TLS 1.3. SSL Basics Sun, 26 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/https-migration-woocommerce.html https://sslguides.com/articles/https-migration-woocommerce.html WordPress's migration steps, plus the cart, session, and payment gateway complications WooCommerce adds on top. HTTPS Migration Sun, 26 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/history-tls-1-1-forgotten-version.html https://sslguides.com/articles/history-tls-1-1-forgotten-version.html Released in 2006, largely skipped by the industry's collective memory of TLS history. SSL History Sun, 26 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/history-chrome-root-program.html https://sslguides.com/articles/history-chrome-root-program.html Chrome moving to manage its own trust store independently of the underlying operating system. SSL History Sun, 26 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/what-is-perfect-forward-secrecy.html https://sslguides.com/articles/what-is-perfect-forward-secrecy.html A property that protects past conversations even if your private key leaks tomorrow. SSL Basics Sat, 25 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/fix-ssl-handshake-timeouts.html https://sslguides.com/articles/fix-ssl-handshake-timeouts.html Often a network-level or firewall issue rather than anything about the certificate itself. Troubleshooting Sat, 25 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/force-https-bigcommerce.html https://sslguides.com/articles/force-https-bigcommerce.html SSL is included by default on BigCommerce stores — here's where the enforcement setting actually lives. HTTPS Migration Fri, 24 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/https-reverse-proxy-setup.html https://sslguides.com/articles/https-reverse-proxy-setup.html Where the redirect and the certificate actually belong when Nginx sits in front of your app server. HTTPS Migration Fri, 24 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/fix-err-ssl-version-cipher-mismatch.html https://sslguides.com/articles/fix-err-ssl-version-cipher-mismatch.html The client and server share no compatible protocol version or cipher suite. Troubleshooting Fri, 24 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/why-certificates-expire.html https://sslguides.com/articles/why-certificates-expire.html It's not a business model. Short lifespans are a deliberate security control. SSL Basics Thu, 23 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/redirect-wordpress-to-https.html https://sslguides.com/articles/redirect-wordpress-to-https.html The exact order of operations — site URLs, .htaccess, mixed content, and the plugin shortcut. HTTPS Migration Thu, 23 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/fix-postman-ssl-certificate-errors.html https://sslguides.com/articles/fix-postman-ssl-certificate-errors.html A settings toggle exists for testing — use it carefully, and only when you understand why. Troubleshooting Thu, 23 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/ssl-for-email-server-smtp-imap.html https://sslguides.com/articles/ssl-for-email-server-smtp-imap.html Three different ports, three different historical conventions for where encryption starts. How-To Guides Wed, 22 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/configure-strong-tls-nginx.html https://sslguides.com/articles/configure-strong-tls-nginx.html A short, current configuration block rather than a hand-assembled cipher list. How-To Guides Wed, 22 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/history-sweet32-attack.html https://sslguides.com/articles/history-sweet32-attack.html 2016 — the vulnerability that finally ended 3DES's long career in TLS. SSL History Wed, 22 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/https-vs-http.html https://sslguides.com/articles/https-vs-http.html One letter, and an entire encrypted layer sitting underneath it. SSL Basics Mon, 20 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/free-vs-paid-ssl.html https://sslguides.com/articles/free-vs-paid-ssl.html The encryption is identical. What you're actually paying for is validation depth, warranty, and support. SSL Basics Mon, 20 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/rolling-back-https-migration-safely.html https://sslguides.com/articles/rolling-back-https-migration-safely.html The one setting that makes a clean rollback impossible if you've already flipped it. HTTPS Migration Mon, 20 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/wildcard-certificate-dns-validation.html https://sslguides.com/articles/wildcard-certificate-dns-validation.html Wildcard certificates specifically require DNS validation — HTTP validation isn't an option here. How-To Guides Mon, 20 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/history-acme-protocol-standardization.html https://sslguides.com/articles/history-acme-protocol-standardization.html A tool built for one CA became the open standard several others now use too. SSL History Mon, 20 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/fix-unable-to-get-local-issuer-certificate.html https://sslguides.com/articles/fix-unable-to-get-local-issuer-certificate.html The same underlying gap — a missing intermediate — showing up as three differently-worded errors. Troubleshooting Mon, 20 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/fix-email-client-certificate-trust-warnings.html https://sslguides.com/articles/fix-email-client-certificate-trust-warnings.html Usually a mail server certificate hostname mismatch, easy to overlook since it's a separate cert from your website. Troubleshooting Mon, 20 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/what-is-tls-termination.html https://sslguides.com/articles/what-is-tls-termination.html Where the encrypted connection actually ends — and it's often not where you'd assume. SSL Basics Sun, 19 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/https-migration-large-site-seo.html https://sslguides.com/articles/https-migration-large-site-seo.html The technical migration is the easy part. Protecting years of accumulated ranking signal is the actual project. HTTPS Migration Sun, 19 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/history-mobile-browsers-cert-trust.html https://sslguides.com/articles/history-mobile-browsers-cert-trust.html Stricter, less forgiving clients that pushed the whole industry toward more careful chain installation. SSL History Sun, 19 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/fixing-sni-misconfigurations.html https://sslguides.com/articles/fixing-sni-misconfigurations.html One server, several sites, and the specific configuration mistake that serves the wrong one. Troubleshooting Sun, 19 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/fix-err-ssl-protocol-error.html https://sslguides.com/articles/fix-err-ssl-protocol-error.html Often means plain HTTP is being served on the HTTPS port. Troubleshooting Sun, 19 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/http2-and-https.html https://sslguides.com/articles/http2-and-https.html No major browser will negotiate HTTP/2 without TLS, even though the spec technically allows it. SSL Basics Sat, 18 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/certificate-vs-key-pair.html https://sslguides.com/articles/certificate-vs-key-pair.html Two related but distinct things people often use interchangeably — worth untangling once, clearly. SSL Basics Sat, 18 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/secure-database-connection-tls.html https://sslguides.com/articles/secure-database-connection-tls.html Your website's padlock protects visitors. This is the encryption that protects the connection behind it. How-To Guides Sat, 18 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/certificate-auto-discovery-many-domains.html https://sslguides.com/articles/certificate-auto-discovery-many-domains.html AutoSSL and similar tools that issue certificates for every domain automatically, without a manual list. How-To Guides Sat, 18 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/force-https-webflow.html https://sslguides.com/articles/force-https-webflow.html One toggle in site settings — plus a note on what happens to your old http:// links. HTTPS Migration Fri, 17 Jul 2026 00:00:00 +0000 https://sslguides.com/articles/sha1-deprecation-history.html https://sslguides.com/articles/sha1-deprecation-history.html A decade-long, deliberately gradual retirement — and the research that finally proved it necessary. SSL History Fri, 17 Jul 2026 00:00:00 +0000