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!

Om de ûnderfining foar jo te ferbetterjen is tydlik de funksjonaliteit dan dizze website troch ûnderhâldswurk beheind. Wannear in artikel jo probleem net oplost en jo in fraach stelle wolle, kin ús stipemienskip jo helpe yn @FirefoxSupport op Twitter en /r/firefox op Reddit.

Sykje yn Support

Mij stipescams. Wy sille jo nea freegje in telefoannûmer te beljen, der in sms nei ta te stjoeren of persoanlike gegevens te dielen. Meld fertochte aktiviteit mei de opsje ‘Misbrûk melde’.

Mear ynfo

Dizze konversaasje is argivearre. Stel in nije fraach as jo help nedich hawwe.

https://support.mozilla.org/en-US/kb/where-go-developer-support

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use always firefox , use now PC windows 10, but since near week have a problem only with firefox , do not have this problem chrome , now because this use chrome , can you support to fix this problem, uninstall firefox, after restart PC, reinstall firefox do not have any change with problem , after that cleared everything in the history , do not have any change about problem, after that use Troubleshooting Information after them refresh firefox , do not change anything , use Troubleshooting Information after that restart with adds disabled , do not have any chane with problem , why. send to your support picture a problem with the text message error imported. Error code: SEC_ERROR_UNKNOWN_ISSUER. this problem have with website is very secure example https://connect.bein.net/ or https://www.youtube.com/ need to your support. imported. Error code: SEC_ERROR_UNKNOWN_ISSUER The owner of connect.bein.net has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website connect.bein.net uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root certificate may need to be. very need to your support .

thanks for help.

use always firefox , use now PC windows 10, but since near week have a problem only with firefox , do not have this problem chrome , now because this use chrome , can you support to fix this problem, uninstall firefox, after restart PC, reinstall firefox do not have any change with problem , after that cleared everything in the history , do not have any change about problem, after that use Troubleshooting Information after them refresh firefox , do not change anything , use Troubleshooting Information after that restart with adds disabled , do not have any chane with problem , why. send to your support picture a problem with the text message error imported. Error code: SEC_ERROR_UNKNOWN_ISSUER. this problem have with website is very secure example https://connect.bein.net/ or https://www.youtube.com/ need to your support. imported. Error code: SEC_ERROR_UNKNOWN_ISSUER The owner of connect.bein.net has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website connect.bein.net uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root certificate may need to be. very need to your support . thanks for help.

Bewurke troch James op

Keazen oplossing

There is security software like Avast and Kaspersky and BitDefender and ESET that intercepts secure connections and sends their own certificate or that incorporates special web shielding features that can block content.


If you can't inspect the certificate via Advanced (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 with the https:// protocol prefix (https://xxx.xxx).

  • 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 please attach a screenshot that shows the Certificate Viewer with the issuer.

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Keazen oplossing

There is security software like Avast and Kaspersky and BitDefender and ESET that intercepts secure connections and sends their own certificate or that incorporates special web shielding features that can block content.


If you can't inspect the certificate via Advanced (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 with the https:// protocol prefix (https://xxx.xxx).

  • 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 please attach a screenshot that shows the Certificate Viewer with the issuer.