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

Why is FireFox not trusting my wildcard root CA when a site is HSTS enabled?

  • 3 respostas
  • 2 have this problem
  • 2 views
  • Last reply by cor-el

more options

The other two major browsers, Google Chrome and Internet Explorer both exempt sites covered by a trust locally installed wildcard root CA's from HSTS checks, however Firefox throws a certificate warning.

There are legitimate reasons to install a wildcard root CA onto users devices, such as for performing HTTPS inspection within a corporate or education environment, however FF no longer allows this.

I can understand the developers are trying to protect against MITM attacks, but this has to be an oversight or bug?

The other two major browsers, Google Chrome and Internet Explorer both exempt sites covered by a trust locally installed wildcard root CA's from HSTS checks, however Firefox throws a certificate warning. There are legitimate reasons to install a wildcard root CA onto users devices, such as for performing HTTPS inspection within a corporate or education environment, however FF no longer allows this. I can understand the developers are trying to protect against MITM attacks, but this has to be an oversight or bug?

All Replies (3)

more options

what error message/error code are you getting?

more options

Firefox uses it's own certificate store, not the system one tht chrome and IE use. Have you tried installing the certificate in Firefox's certificate store?

more options