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.

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.

When I updated to the latest version of Firefox it no longer lets me open Google (or related) web pages, but can open any other page. How can this be fixed?

  • 3 replies
  • 1 has this problem
  • 4 views
  • Last reply by FredMcD

Claytonap12
Claytonap12
more options

Now that my firefox browser has updated to the latest version it won't let me open google.com or any other related google service. It is coming up with the following message:

"Your connection is not secure

The owner of www.google.com.au has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.

This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox may only connect to it securely. As a result, it is not possible to add an exception for this certificate."

How can this be fixed? Previously i'd fixed it by downloading older version of firefox, but that is not a satisfactory solution.

Now that my firefox browser has updated to the latest version it won't let me open google.com or any other related google service. It is coming up with the following message: "Your connection is not secure The owner of www.google.com.au has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website. This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox may only connect to it securely. As a result, it is not possible to add an exception for this certificate." How can this be fixed? Previously i'd fixed it by downloading older version of firefox, but that is not a satisfactory solution.

All Replies (3)

FredMcD
FredMcD
more options

There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connections and send their own certificate.

https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can

https://support.mozilla.org/en-US/kb/firefox-and-other-browsers-cant-load-websites

https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message

https://support.mozilla.org/en-US/kb/connection-untrusted-error-message

http://kb.mozillazine.org/Error_loading_websites


  • uses an invalid security certificate SSL_ERROR_BAD_CERT_DOMAIN
  • configured their website improperly

How to troubleshoot the error code "SEC_ERROR_UNKNOWN_ISSUER" on secure websites https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER

Claytonap12
Claytonap12 Question owner
more options

This is on my work computer so can't go installing random firewalls, as we already have one. So this isn't helpful. Sorry.

FredMcD
FredMcD
more options

Who said anything about installing Firewalls? The instructions were to check the firewalls.

Often a problem like yours is the fault of your protection programs.

FredMcD said

There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connections and send their own certificate.