We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Avatar for Username

Шукати в статтях підтримки

Остерігайтеся нападів зловмисників. Mozilla ніколи не просить вас зателефонувати, надіслати номер телефону у повідомленні або поділитися з кимось особистими даними. Будь ласка, повідомте про підозрілі дії за допомогою меню “Повідомити про зловживання”

Докладніше

Ця тема перенесена в архів. Якщо вам потрібна допомога, запитайте.

Error message when opening Thunderbird

  • 1 відповідь
  • 1 має цю проблему
  • 27 переглядів
  • Остання відповідь від Tonnes

norm629
norm629
more options

The following message show in the message box when I open Thunderbird. The program seems to word fine, I can send and receive mail. The message will disappear when I click on an email. version 52.2.1

"Secure connection failed start.thunderbird.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 imported. Error code: <a id="errorCode" title="SEC_ERROR_UNKNOWN_ISSUER">SEC_ERROR_UNKNOWN_ISSUER</a>"

The following message show in the message box when I open Thunderbird. The program seems to word fine, I can send and receive mail. The message will disappear when I click on an email. version 52.2.1 "Secure connection failed start.thunderbird.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 imported. Error code: <a id="errorCode" title="SEC_ERROR_UNKNOWN_ISSUER">SEC_ERROR_UNKNOWN_ISSUER</a>"

Усі відповіді (1)

Tonnes
Tonnes
  • Locale Leader
more options

Please have a look at the How to troubleshoot security error codes on secure websites support article for Firefox and make sure you do what is required for any antivirus software. Most likely, it is interfering with your Thunderbird website connections - start.thunderbird.net is the startup web page, and perhaps you may experience the same in the Add-ons Manager for the AMO website. If you also user Firefox, you may suffer the same issue there.

Also see this question.