This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

ابحث في الدعم

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

getting error "The certificate is not trusted because no issuer chain was provided. (Error code: sec_error_unknown_issuer)"

  • 1 (رد واحد)
  • 21 have this problem
  • 1 view
  • آخر ردّ كتبه philipp

nitin2joy
nitin2joy
more options

I am using site "https://www.ultimatix.net" for learning purpose. This site directs to another site for web based learning, which is "icalmscontent.ultimatix.net". It is giving error "icalmscontent.ultimatix.net uses an invalid security certificate.

The certificate is not trusted because no issuer chain was provided.

(Error code: sec_error_unknown_issuer)", and there is no button to add exception. Please help.

I am using site "https://www.ultimatix.net" for learning purpose. This site directs to another site for web based learning, which is "icalmscontent.ultimatix.net". It is giving error "icalmscontent.ultimatix.net uses an invalid security certificate. The certificate is not trusted because no issuer chain was provided. (Error code: sec_error_unknown_issuer)", and there is no button to add exception. Please help.

All Replies (1)

philipp
philipp
  • Moderator
more options

hello nitin2joy, the "add exception"-button is not accessible on framed pages for security purposes (to avoid phishing/impersonating by malicious sites). in case the page you're trying to access is embedded in an iframe, right-click the error page, click on "this frame" > "show only this frame" and hopefully you can add an exception in the next step. this should only be necessary once if you choose to permanently store the exception.