Wiki - Problems & Issues

"Modulus missmatch" error

Sectigo/DigiCert certification authority managers require reviewing all orders manually if an order flagged for "manual verification". Typically it takes around 24-48 hours to check, issue or reject an order...

"CERT_COMMON_NAME_INVALID"

ERR_CERT_COMMON_NAME_INVALID is a very popular SSL error during loading the website. In most cases, the issue is due to certificate misconfiguration on a server...

"SSL_VERSION_OR_CIPHER_MISMATCH"

You are at the right place to find a solution receiving ERR_SSL_VERSION_OR_CIPHER_MISMATCH error. You are not alone as thousands of webmasters and website visitors face that common issue daily.

"SSL_PROTOCOL_ERROR"

Google Chrome is one of the most popular and trusted browsers by most Internet users, however, sometimes you may see SSL error “This site can’t provide a secure connection – ERR_SSL_PROTOCOL_ERROR” while surfing online...

"SSL_PINNED_KEY_NOT_IN_CERT_CHAIN"

Usage of "Public Key Pinning" may bring difficulties and your say may stop opening in Chrome browser. Usually, that happens after the renewal of an SSL certificate. In this case, the time chosen by the administrator could exceed the time of expiration of the certificate, or its renewal...

"SSL_ERROR_RX_RECORD_TOO_LONG"

The most common issue on Mozilla Firefox browser happens as a result of wrong configuration of your certificate on the web hosting server. The port a client is trying to connect to is opened on the server, however, no properly configurated SSL certificate found for this port on the server's side...

"ERR_CERTIFICATE_TRANSPARENCY_REQUIRED"

The most common issue in receiving the error ERR_CERTIFICATE_TRANSPARENCY_REQUIRED in Chrome browser is a problem with CT logs, as SSL is corrupted, misconfigured or expired. A Certificate Transparency (CT) requires each certificate to be properly logged...

"ERR_CERT_DATE_INVALID"

The NET::ERR_CERT_DATE_INVALID message indicates that Chrome "considers" the requested site to be insecure. He “doubts” the reliability of the SSL certificate of the resource...

"SEC_ERROR_EXPIRED_CERTIFICATE"

The most common issue of getting "SEC_ERROR_EXPIRED_CERTIFICATE" error means website owner forgot to renew an SSL certificate, which is a very bad practice. However, even large projects like LinkedIn or Instagram missed the renewal process...

"SEC_ERROR_UNKNOWN_ISSUER"

On websites that need to be secured (the address starts with "https: //"), Firefox must verify that the certificate provided by the website is valid. If the certificate cannot be verified, Firefox will stop connecting to the website and display instead of a page with the "Warning: Potential Security Risk" error...

"Windows does not have enough information to verify this certificate" Error

The uncommon error happening on Windows, you will see it when Intermediate certificates are not installed...

Lost Private key

Losing the private key is the most common issue webmasters faces during SSL certificate installation. This article will help you to fix that issue helping to understand possible scenarios to recover the key or to regenerate and reissue SSL...

Common Name Mismatch Error

Common Name Mismatch Error always happens when the Common name or SAN value of your Multi-domain SSL certificate does not match the domain. You may see different error messages, it depends on the browser you are using...

Why No Padlock

A very common issue related to SSL happens when customers and website owners do no see green/gray padlock in the address bar. That may happen in all browsers including Chrome, Firefox, MS Edge, Safari and others...