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

SSL errors on all websites. Was clearing roaming/mozilla, deleted all files.

  • 5 பதிலளிப்புகள்
  • 3 இந்த பிரச்னைகள் உள்ளது
  • 1 view
  • Last reply by philipp

Hello!

I was clearing firefox from my system to reinstall it from scratch. I went into %appdata% and deleted Mozilla's folder completely. Now when I reinstall firefox, it doesn't even let my sync my account - everything shows up as untrusted SSL with the Error code: sec_error_unknown_issuer. Can someone please help me out?

Hello! I was clearing firefox from my system to reinstall it from scratch. I went into %appdata% and deleted Mozilla's folder completely. Now when I reinstall firefox, it doesn't even let my sync my account - everything shows up as untrusted SSL with the Error code: sec_error_unknown_issuer. Can someone please help me out?

தீர்வு தேர்ந்தெடுக்கப்பட்டது

please attempt to add an exception on the bottom of the error page & inspect the certificate (see the screenshot attached for instructions):

  • which issuer information does the certificate contain?
Read this answer in context 👍 1

All Replies (5)

hello, what security program are you using on the affected pc?

I'm running Windows 10 build 9879 (x64) with Qihoo 360 Total Security. I tried disabling it + Windows firewall - didn't help. I had firefox reinstalled a couple of times before on this build with no issues, was running nightly, aurora and beta builds. Now I can't run any of them without being affected by this issue.

தீர்வு தேர்ந்தெடுக்கப்பட்டது

please attempt to add an exception on the bottom of the error page & inspect the certificate (see the screenshot attached for instructions):

  • which issuer information does the certificate contain?

Thank you, your picture pointed me to the issue - it was Adguard blocking everything. I disabled it and everything is working just fine! Going to contact them about this issue to see if they can fix their program.

ok, they already seem to have an article at hand for this issue: https://kb.adguard.com/index.php?/Knowledgebase/Article/View/21/10/the-connection-is-not-trusted