Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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.

সহায়তা খুঁজুন

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.

আরও জানুন

untrusted connection

  • 9 উত্তরসমূহ
  • 11 এই সমস্যাটি আছে
  • 3 দেখুন
  • শেষ জবাব দ্বারা FredMcD

more options

Hi, I keep getting this untrusted connection message. I have tried posted solutions for the "this connection is untrusted" problem Firefox seems to be having. It occurs on any website I try to go into. I have tried changing date and time, running Norton antivirus scans (I have Norton 360 premier installed), change information using about:config setting, uninstalled and reinstalled Firefox and deleted "cert8.db" file, but nothing seems to work.

I tried adding images but can't attach them for some unknown reason. I am using internet explorer to send this message since Firefox not working. The error code I keep getting on every website, even on Firefox support websites are (Error code: sec_error_unknown_issuer) (Error code: sec_error_cert_signature_algorithm_disabled)

What do I do next?

Hi, I keep getting this untrusted connection message. I have tried posted solutions for the "this connection is untrusted" problem Firefox seems to be having. It occurs on any website I try to go into. I have tried changing date and time, running Norton antivirus scans (I have Norton 360 premier installed), change information using about:config setting, uninstalled and reinstalled Firefox and deleted "cert8.db" file, but nothing seems to work. I tried adding images but can't attach them for some unknown reason. I am using internet explorer to send this message since Firefox not working. The error code I keep getting on every website, even on Firefox support websites are (Error code: sec_error_unknown_issuer) (Error code: sec_error_cert_signature_algorithm_disabled) What do I do next?

সমাধান চয়ন করুন

Just an update. Apparently I had a virus on my computer which was not detected. Getting rid of it solved the problem. Thanks for all the help.

প্রেক্ষাপটে এই উত্তরটি পড়ুন। 👍 1

All Replies (9)

more options

I've called the big guys to help you. Good luck.


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

http://www.ehow.com/how_11385212_troubleshoot-reset-connection-firefox.html

https://support.mozilla.org/en-US/kb/server-not-found-connection-problem

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

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

This Connection is Untrusted is sometimes caused because the computer system clock is wrong. Check the time / date / time zone settings.

more options

Hello Lthomas2, check if the issue persist in a new profile.

https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile


thank you

more options

ideato said

Hello Lthomas2, check if the issue persist in a new profile. https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile thank you

Hi ideato, This did not work. I am getting (error code: sec_error_unknown_issuer) when I try to use www.mozilla.org

more options

FredMcD said

I've called the big guys to help you. Good luck.

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

http://www.ehow.com/how_11385212_troubleshoot-reset-connection-firefox.html

https://support.mozilla.org/en-US/kb/server-not-found-connection-problem

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

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

This Connection is Untrusted is sometimes caused because the computer system clock is wrong. Check the time / date / time zone settings.

Link 1; Tried resetting connection but it did not do anything Link 2; I selected no proxy, changed DNS, changed IPv6, but still not working link 3; does not apply because I can use internet explorer Link 4, 5 and 6; I have already tried these, deleting cert8.db does not do anything

The computer system clock is correct. It says 1/06/2016. Under the "internet time" tab it states "The clock was successfully synchronized with time.windows.com on 1/06/16 at 3.05 PM"

more options

If you can't inspect the certificate via "I Understand the Risks" then try this:

Open the "Add Security Exception" window by pasting this chrome URL in the Firefox location/address bar and check the certificate:

  • chrome://pippki/content/exceptionDialog.xul

In the location field of this window type or paste the URL of the website.

  • retrieve the certificate via the "Get certificate" button
  • click the "View..." button to inspect the certificate in the Certificate Viewer

You can inspect details like the issuer and the certificate chain in the Details tab of the Certificate Viewer. Check who is the issuer of the certificate. If necessary then you can attach a screenshot that shows the certificate viewer.

more options

cor-el said

If you can't inspect the certificate via "I Understand the Risks" then try this: Open the "Add Security Exception" window by pasting this chrome URL in the Firefox location/address bar and check the certificate:
  • chrome://pippki/content/exceptionDialog.xul
In the location field of this window type or paste the URL of the website.
  • retrieve the certificate via the "Get certificate" button
  • click the "View..." button to inspect the certificate in the Certificate Viewer
You can inspect details like the issuer and the certificate chain in the Details tab of the Certificate Viewer. Check who is the issuer of the certificate. If necessary then you can attach a screenshot that shows the certificate viewer.

Hi again, tried this for www.hotmail.com since this is one of the website I try to access and not getting into. I attached a screenshot of the certificate.

more options

hello, please download and install firefox 43.0.4 from https://www.mozilla.org/firefox/all/ which should fix the issue for the moment. this will be caused by some software on your device which is intercepting secure network traffic - for more details on that please refer to https://blog.mozilla.org/security/2016/01/06/man-in-the-middle-interfering-with-increased-security/

more options

চয়ন করা সমাধান

Just an update. Apparently I had a virus on my computer which was not detected. Getting rid of it solved the problem. Thanks for all the help.

more options

That was very good work. Well Done. Please flag your last post as Solved Problem so others will know.