Up-to-date content about SSL certificates, web security and technology
Common errors encountered in obtaining SSL certificates with Let's Encrypt and Certbot: rate limit, DNS verification, port 80 block, renewal problems and solutions.
Causes of ERR_TOO_MANY_REDIRECTS redirect loop error after SSL installation. Redirect loop solution in Cloudflare, Nginx, Apache and WordPress.
SSL certificate chain errors: Detection and solution of Incomplete chain, wrong order, expired intermediate problems.
HSTS (HTTP Strict Transport Security) errors, misconfiguration and expiration issues. HSTS preload, max-age settings and solutions to common errors.
SSL/TLS Handshake Failed error is when the handshake process fails while establishing a secure connection. Step-by-step solution to certificate, protocol and server configuration issues.
ERR_CERT_COMMON_NAME_INVALID error occurs when the domain name in the SSL certificate and the accessed address do not match. www/non-www, subdomain and SAN configuration solutions.
If your HTTPS page contains HTTP resources, a Mixed Content error occurs. Difference between active and passive mixed content, detection methods and bulk correction guide.
Causes and solution of ERR_SSL_VERSION_OR_CIPHER_MISMATCH error. Removed TLS 1.0/1.1 support, fix cipher suite incompatibility and SNI issues step by step.
All causes and step-by-step solutions for the NET::ERR_CERT_AUTHORITY_INVALID error seen in Chrome, Edge and other browsers. Intermediate certificate chain, self-signed and root CA issues.
Learn about errors encountered in the SSL certificate renewal process and how to avoid them. Auto-renewal, DCV validation issues, and certificate chain errors.
Causes and step-by-step solutions for SSL certificate errors encountered in the browser. NET::ERR_CERT_AUTHORITY_INVALID, expired certificate and mixed content errors.
Configure cloud code signing integration with GitHub Actions, Jenkins, and Azure DevOps step by step. Automatic signing pipeline example and best practices.