Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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.

Search Support

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

Version 4.0.1 won't allow certificate exception when it's expired

  • 3 replies
  • 71 have this problem
  • 1 view
  • Last reply by cor-el

more options

SSL connection fails with "An error occurred during a connection to 24xx:xxxx::x:xx:443.

The certificate issuer's certificate has expired. Check your system date and time.

(Error code: sec_error_expired_issuer_certificate). Previous versions of Firefox allows me to add an exception. This one doesn't. I get the same error with Get Certificate. I've deleted the previous certificate info and it won't reset on a new connection attempt. Is this a bug? I get in fine with IE.

SSL connection fails with "An error occurred during a connection to 24xx:xxxx::x:xx:443. The certificate issuer's certificate has expired. Check your system date and time. (Error code: sec_error_expired_issuer_certificate). Previous versions of Firefox allows me to add an exception. This one doesn't. I get the same error with Get Certificate. I've deleted the previous certificate info and it won't reset on a new connection attempt. Is this a bug? I get in fine with IE.

Chosen solution

Try to add an exception manually in the Certificate Manager.

  • Tools > Options > Advanced > Encryption: Certificates > View Certificates > Servers
Read this answer in context 👍 7

All Replies (3)

more options

Chosen Solution

Try to add an exception manually in the Certificate Manager.

  • Tools > Options > Advanced > Encryption: Certificates > View Certificates > Servers
more options

Hi, Thanks for the clue. I did go back and added the cert that was previously accepted and voila, ...it worked.

more options

You're welcome