Knowledgebase
Help Center
SSL & HTTPS
Certificate issuance, validation, installation, renewal, redirects, mixed content, and secure website delivery.
Subcategories
Refine the topic before choosing an article.
Certificates & HTTPSDetailed customer guidance for TLS certificates and HTTPS enablement, including domain validation, certificate names, chains, redirects, application URLs, mixed content, and automatic renewal.
SSL Troubleshooting & HardeningDetailed customer guidance for SSL troubleshooting and HTTPS hardening, including certificate-name errors, incomplete chains, renewal failures, redirect loops, HSTS, proxy awareness, and mixed content.
Articles
18 published guides in this category.
TLS, SSL, certificates, and HTTPS: the terminology explained
TLS, SSL, certificates, and HTTPS: the terminology explained is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may not a…
Certificate names, SANs, issuers, and chains explained
Certificate names, SANs, issuers, and chains explained is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may not adminis…
Why a browser still says Not Secure after a certificate is installed
Why a browser still says Not Secure after a certificate is installed is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who m…
Fixing NET::ERR_CERT_COMMON_NAME_INVALID
Fixing NET::ERR_CERT_COMMON_NAME_INVALID is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may not administer servers ev…
Fixing NET::ERR_CERT_DATE_INVALID
Fixing NET::ERR_CERT_DATE_INVALID is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may not administer servers every day…
Fixing an incomplete certificate chain or untrusted issuer warning
Fixing an incomplete certificate chain or untrusted issuer warning is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may…
Finding and fixing mixed-content warnings on an HTTPS page
Finding and fixing mixed-content warnings on an HTTPS page is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may not adm…
Fixing too many redirects after enabling HTTPS
Fixing too many redirects after enabling HTTPS is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may not administer serv…
How to force HTTPS safely with an .htaccess redirect
How to force HTTPS safely with an .htaccess redirect is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may not administe…
Why a certificate remains pending validation
Why a certificate remains pending validation is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may not administer server…
Why automatic certificate renewal may fail
Why automatic certificate renewal may fail is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may not administer servers…
How a CAA record can prevent a certificate from being issued
How a CAA record can prevent a certificate from being issued is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may not a…
HSTS explained and why it should be enabled carefully
HSTS explained and why it should be enabled carefully is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may not administ…
TLS versions and cipher suites explained for non-specialists
TLS versions and cipher suites explained for non-specialists is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may not a…
Why a certificate covers example.com but not www.example.com, or the reverse
Why a certificate covers example.com but not www.example.com, or the reverse is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for reade…
Using SSL correctly with a CDN or reverse proxy
Using SSL correctly with a CDN or reverse proxy is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may not administer ser…
Fixing a certificate warning in an email client
Fixing a certificate warning in an email client is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may not administer ser…
How to verify a certificate after changing DNS or moving a website
How to verify a certificate after changing DNS or moving a website is a practical Spark Rack customer guide about certificates, HTTPS, validation, redirects, browser trust, and renewal. It is written for readers who may…
