Join us to show up for other Firefox users 🦊. Earn fun badges and Mozilla swag vouchers! Find out more: https://mzl.la/askafox150

Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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

EC_ERROR_REVOKED_CERTIFICATE

Hi

When I use Firefox to act as a browser to search for topics I get the error message

EC_ERROR_REVOKED_CERTIFICATE

I am now having to use "Bing" to search

This has been going on for a long time

Thanks Gareth

Hi When I use Firefox to act as a browser to search for topics I get the error message EC_ERROR_REVOKED_CERTIFICATE I am now having to use "Bing" to search This has been going on for a long time Thanks Gareth

All Replies (1)

Hi Gareth, search sites usually keep their certificates up-to-date and in good condition.

You can use the following tool to get an independent opinion on whether the site's certificate actually has been revoked:

https://www.ssllabs.com/ssltest/

It take a minute or two to run.