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.

All websites I go to suddenly have invalid certificates. They all present security concerns. Never ever happened before. Even you own site this happened with. what do I do

nancymcsu
nancymcsu
more options

Started with this problem a week ago. I cannot access any website without firefox saying that certificate is invalid and the site represents a security risk. Do I want to override. Then the whole process is circuitive. Something very wrong.

Started with this problem a week ago. I cannot access any website without firefox saying that certificate is invalid and the site represents a security risk. Do I want to override. Then the whole process is circuitive. Something very wrong.

All Replies (2)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Did you check your security software (firewall)?

the-edmeister
the-edmeister
  • Moderator
more options

Is the date / time on your PC correct?