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.

Avatar for Username

Prohledat stránky podpory

Vyhněte se podvodům. Za účelem poskytnutí podpory vás nikdy nežádáme, abyste zavolali nebo poslali SMS na nějaké telefonní číslo nebo abyste sdělili své osobní údaje. Jakékoliv podezřelé chování nám prosím nahlaste pomocí odkazu „Nahlásit zneužití“.

Zjistit více

Toto vlákno bylo archivováno. Pokud potřebujete pomoci, založte prosím nový dotaz.

Why after I get a Firefox update, every site is now a security threat including Mozilla and firefox, error message that claims the requested sites security cert

  • 1 odpověď
  • 3 mají tento problém
  • 302 zobrazení
  • Poslední odpověď od philipp
  • Archivováno

bmetgod
bmetgod

Every site I go to now after your latest update gives me the following error message including YOURS:

Your connection is not secure

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

Your connection is not secure

The owner of www.facebook.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 only connect to it securely. As a result, it is not possible to add an exception for this certificate.

Every site I go to now after your latest update gives me the following error message including YOURS: Your connection is not secure The owner of www.mozilla.org has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website. Your connection is not secure The owner of www.facebook.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 only connect to it securely. As a result, it is not possible to add an exception for this certificate.

Všechny odpovědi (1)

philipp
philipp
  • Moderator

hi bmetgod, first please make sure that the date, time & timezone are set correctly on your system. if this doesn't solve the issue (or it is already set properly), a solution depends on the individual circumstances:

  • what is the error code shown when you click on advanced on that error page?
  • please also give us more information about the error by clicking on the error code, copying the text to the clipboard and then pasting it here into a reply in the forum.

thank you!