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

Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

How can i recover access to all the websites i used to go with firefox

  • 2 fhreagra
  • 1 leis an bhfadhb seo
  • 3 views
  • Freagra is déanaí ó Shadow110

more options

I get this message to any website i try, after i refresh firefox.

The owner of www.google.com 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.

I get this message to any website i try, after i refresh firefox. The owner of www.google.com 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.
Attached screenshots

All Replies (2)

more options

Hi, can you click the Advanced button ? If so do so.

more options

https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER

It is possibly Avast or AVG which Avast bought. If your running any of the listed Security Software please see their Community Forum for a work around.