Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

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

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

Unable to view invalid certificate

  • 3 replies
  • 1 has this problem
  • 2 views
  • Last reply by Shadow110

fredrikhl
fredrikhl
more options

Usually, I'm able to view certificate info by:

1. Going to «View Page Info» 2. Selecting the Security tab 3. Clicking a «View Certificate» button

In my current version of Firefox, the «View Certificate» button does not show when the certificate is deemed invalid (SEC_ERROR_UNKNOWN_ISSUER). Previous versions would show the certificate here, even invalid ones. Is this a bug?

Usually, I'm able to view certificate info by: 1. Going to «View Page Info» 2. Selecting the Security tab 3. Clicking a «View Certificate» button In my current version of Firefox, the «View Certificate» button does not show when the certificate is deemed invalid (SEC_ERROR_UNKNOWN_ISSUER). Previous versions would show the certificate here, even invalid ones. Is this a bug?

All Replies (3)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

You can open the Certificate Manager and go to the Servers tab. The Servers tab has an "Add Exception" to open the "Add Security Exception" window.

  • chrome://pippki/content/exceptionDialog.xul

You can type/paste the domain in the location field on this page and click "Get Certificate" to retrieve the certificate and click the "View" button to inspect the certificate.

fredrikhl
fredrikhl Question owner
more options

Ah, well. There's already other (and better) utilities to fetch and view certificates from any odd host.

I was mainly missing a simple way to look up a certificate (and its issuer chain) from a host that I'm already trying to connect to…

Shadow110
Shadow110
more options

If wanting to try and fix the issue (and is a issue in FF : Please : https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer and https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles then https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings

Please let us know if this solved your issue or if need further assistance.