ERR_SSL_KEY_USAGE_INCOMPATIBLE means the browser received a certificate whose key usage settings do not fit the way that certificate is being used for HTTPS. In most cases, the certificate is real and the hostname may even be correct, but the certificate extensions are wrong for modern TLS. This error is especially common on internal websites, self-signed … Read more
SSL_ERROR_BAD_CERT_DOMAIN means the website is presenting an SSL certificate that does not match the domain name you opened. In practice, the browser asked for one hostname, but the server responded with a certificate issued for a different one. This error is common on misconfigured subdomains, wrong www redirects, multi-site servers, reverse proxies, and Cloudflare setups … Read more
NET::ERR_CERT_DATE_INVALID means the browser thinks the website’s SSL certificate is outside its valid date range. In plain English, the certificate looks expired, not yet valid, or the device checking it has the wrong date, time, or time zone. This error is common in Chrome, but the same root problem can appear in Firefox, Edge, Android, … Read more
Your Connection Is Not Private means the browser cannot trust the website’s HTTPS certificate or the secure connection in front of it. Sometimes the problem is on the website. Sometimes it is on your device, network, antivirus, VPN, or proxy. This guide shows how to fix Your Connection Is Not Private quickly, whether you are … Read more
ERR_CERT_COMMON_NAME_INVALID means the SSL certificate presented by the website does not match the hostname in the browser address bar. In simple terms, the browser asked for one domain, but the server replied with a certificate for a different name. This error is common on new domains, misconfigured subdomains, reverse proxy setups, Cloudflare zones, and servers … Read more
ERR_SSL_VERSION_OR_CIPHER_MISMATCH means the browser could not negotiate a secure HTTPS connection with the website. In most real cases, the cause is not random. It is usually a broken TLS setup, an invalid certificate assignment, an unsupported protocol version, or a mismatch between the server, CDN, and browser. This guide explains how to fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH from … Read more
SSL_ERROR_RX_RECORD_TOO_LONG usually means the browser expected a proper TLS/SSL response but got something else. In real cases, that often points to a broken HTTPS setup, a server speaking plain HTTP on port 443, or software in the middle interfering with the secure connection. This guide explains how to fix SSL_ERROR_RX_RECORD_TOO_LONG from both sides: as a … Read more
Too Many Redirects After SSL appears when a browser is trapped in a redirect loop after HTTPS is enabled. The request keeps bouncing between URLs and never reaches the final page. The browser eventually stops the process and displays a redirect error. Quick Fix Clear browser cookies and cache. Check HTTP → HTTPS redirect rules … Read more
SSL Certificate Not Trusted means the browser cannot verify the identity of a website. The secure HTTPS connection is blocked because the certificate cannot be validated. This usually happens when the certificate chain is incomplete, the certificate is self-signed, expired, or installed incorrectly. Quick Fix Check if the SSL certificate is expired. Confirm it was … Read more
NET::ERR_CERT_AUTHORITY_INVALID means the browser does not trust the website’s SSL certificate. The secure connection is blocked. This happens when the certificate cannot be verified against a trusted Certificate Authority (CA). Quick Fix Check if the SSL certificate is expired. Make sure it’s issued by a trusted CA (not self-signed). Install the full certificate chain (server … Read more
