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How to remove "security exception" for a certificate-expired site

  • 4 replies
  • 0 have this problem
  • 12 views
  • Last reply by ronks1

ronks1
ronks1

When I bring up the certificate-expired URL 

<https://oaklandwiki.org/>

in Firefox 149.0 on Windows 11 I am told "You have added a security exception for this site." But not how to remove it. How do I do that? I did not see anything in Settings or about:config; did I miss it?

When I bring up the certificate-expired URL <https://oaklandwiki.org/> in Firefox 149.0 on Windows 11 I am told "You have added a security exception for this site." But not how to remove it. How do I do that? I did not see anything in Settings or about:config; did I miss it?

Chosen solution

Go to Tools -> Settings -> Privacy & Security. Scroll down to the Certificates section and click the Manage certificates button. Click the Servers Tab/Section. The one you want to remove should be in this list. Highlight it and a Remove button should appear.

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All Replies (4)

MarkRH
MarkRH

Chosen Solution

Go to Tools -> Settings -> Privacy & Security. Scroll down to the Certificates section and click the Manage certificates button. Click the Servers Tab/Section. The one you want to remove should be in this list. Highlight it and a Remove button should appear.

ronks1
ronks1 Question owner

Yes, it looks like that did it; I get the warning message back. Thanks!

Agent virtuel
Agent virtuel
  • Top 25 Contributor

Hello

To complement Troubleshoot time-related errors on secure websites https://support.mozilla.org/en-US/kb/troubleshoot-time-errors-secure-websites

Another way of doing it: https://www.youtube.com/watch?v=ticCp-mY5_4

Other information Troubleshoot security error codes on secure websites https://support.mozilla.org/en-US/kb/error-codes-secure-websites

If the error occurs on one site only, test it using SSL Labs https://www.ssllabs.com/ssltest

https://www.ssllabs.com/ssltest/analyze.html?d=oaklandwiki.org, analyze at instant.

Valid until Sun, 04 Jan 2026 23:59:59 UTC (expired 2 months and 24 days ago) EXPIRED
ronks1
ronks1 Question owner

Thanks! There is a newer version of that wiki page, so I was able to simply rename the problematic links, but your cites are good to know about.

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