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Can't connet to YouTube - "Connection is Untrusted"

Posted

When I try to connect my granddaughter's laptop to YouTube, Firefox says, "This Connection is Untrusted." It won't let me continue because it says YouTube uses HTTP Strict Transport Security. I have no problems with any other websites.

The error code is sec_error_unknown_issuer

The laptop uses Windows 10, which I despise, and is an HP Pavilion x2 11-h110nr.

Please help; YouTube is apparently vital to her continued existence.

When I try to connect my granddaughter's laptop to YouTube, Firefox says, "This Connection is Untrusted." It won't let me continue because it says YouTube uses HTTP Strict Transport Security. I have no problems with any other websites. The error code is sec_error_unknown_issuer The laptop uses Windows 10, which I despise, and is an HP Pavilion x2 11-h110nr. Please help; YouTube is apparently vital to her continued existence.

Additional System Details

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; tb-mailcom/2.6.6; GWX:QUALIFIED; rv:11.0) like Gecko

More Information

FredMcD
  • Top 10 Contributor
4230 solutions 59034 answers

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.

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.
philipp
  • Top 25 Contributor
  • Moderator
5291 solutions 23381 answers

hi, this problem might be happening in windows 10 accounts restricted by microsoft family parental controls. if you don't want to use this feature intentionally, you could turn that off for your account like described at: http://windows.microsoft.com/en-us/windows-10/turn-off-microsoft-family-settings

in case you want to have it on on purpose, you'd need to some configuration work in firefox, and install the certificate of ms family safety that is getting used to intercept secure connections into the browser's trust store. open this link in firefox in the affected account - then a dialog about adding a cert should display. please check the box to Trust this CA to identify web sites & confirm the change.

if this information doesn't apply to your situation, then it might also be due to different software on the device like an antivirus-product which is intercepting secure connections from the machine...

hi, this problem might be happening in windows 10 accounts restricted by microsoft family parental controls. if you don't want to use this feature intentionally, you could turn that off for your account like described at: http://windows.microsoft.com/en-us/windows-10/turn-off-microsoft-family-settings in case you want to have it on on purpose, you'd need to some configuration work in firefox, and install the certificate of ms family safety that is getting used to intercept secure connections into the browser's trust store. open '''[http://mzl.la/1O25F3b this link]''' in firefox in the affected account - then a dialog about adding a cert should display. please check the box to '''Trust this CA to identify web sites''' & confirm the change. if this information doesn't apply to your situation, then it might also be due to different software on the device like an antivirus-product which is intercepting secure connections from the machine...
cor-el
  • Top 10 Contributor
  • Moderator
17425 solutions 157456 answers

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.

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.