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Can't connect to addons.mozilla.org

Posted

I can't connect to some safe websites, which i used before the 66th version of the browser. For example, i can't connect to Firefox's services such as addons.mozilla.org because of issue "SEC_ERROR_UNKNOWN_ISSUER"

The whole message (on Russian): "addons.mozilla.org имеет политику безопасности называемую Форсированное защищённое соединение HTTP (HSTS), что означает, что Firefox может подключиться к нему только через защищённое соединение. Вы не можете добавить исключение, чтобы посетить этот сайт.

Скорее всего, эта проблема связана с самим веб-сайтом, и вы ничего не сможете с этим сделать.

Если вы находитесь в корпоративной сети или используете антивирусную программу, вы можете связаться со службой поддержки для получения помощи. Вы также можете сообщить администратору веб-сайта об этой проблеме. Кто-то может пытаться подменить настоящий сайт и вам лучше не продолжать. Веб-сайты подтверждают свою подлинность с помощью сертификатов. Firefox не доверяет addons.mozilla.org, потому что издатель его сертификата неизвестен, сертификат является самоподписанным, или сервер не отправляет корректные промежуточные сертификаты. Код ошибки: SEC_ERROR_UNKNOWN_ISSUER"

I can't connect to some safe websites, which i used before the 66th version of the browser. For example, i can't connect to Firefox's services such as addons.mozilla.org because of issue "SEC_ERROR_UNKNOWN_ISSUER" The whole message (on Russian): "addons.mozilla.org имеет политику безопасности называемую Форсированное защищённое соединение HTTP (HSTS), что означает, что Firefox может подключиться к нему только через защищённое соединение. Вы не можете добавить исключение, чтобы посетить этот сайт. Скорее всего, эта проблема связана с самим веб-сайтом, и вы ничего не сможете с этим сделать. Если вы находитесь в корпоративной сети или используете антивирусную программу, вы можете связаться со службой поддержки для получения помощи. Вы также можете сообщить администратору веб-сайта об этой проблеме. Кто-то может пытаться подменить настоящий сайт и вам лучше не продолжать. Веб-сайты подтверждают свою подлинность с помощью сертификатов. Firefox не доверяет addons.mozilla.org, потому что издатель его сертификата неизвестен, сертификат является самоподписанным, или сервер не отправляет корректные промежуточные сертификаты. Код ошибки: SEC_ERROR_UNKNOWN_ISSUER"
Quote

Additional System Details

Installed Plug-ins

  • Shockwave Flash 32.0 r0

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0

More Information

cor-el
  • Top 10 Contributor
  • Moderator
17267 solutions 156055 answers

See:

You can check if there is more detail available about the issuer of the certificate.

  • click the "Advanced" button show more detail
  • click the blue error text (SEC_ERROR_UNKNOWN_ISSUER) to show the certificate chain
  • click "Copy text to clipboard" and paste the base64 certificate chain text in a reply

If clicking the blue error text doesn't provide the certificate chain then try these steps to inspect the certificate.

  • open the Servers tab in the Certificate Manager
    • Options/Preferences -> Privacy & Security
      Certificates: View Certificates -> Servers: "Add Exception"
  • paste the URL of the website (https://xxx.xxx) in it's Location field

Let Firefox retrieve the certificate -> "Get Certificate"

  • click the "View" button and inspect the certificate

You can find detail like the issuer of the certificate and intermediate certificates in the Details tab.

See: *https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER You can check if there is more detail available about the issuer of the certificate. *click the "Advanced" button show more detail *click the blue error text (SEC_ERROR_UNKNOWN_ISSUER) to show the certificate chain *click "Copy text to clipboard" and paste the base64 certificate chain text in a reply If clicking the blue error text doesn't provide the certificate chain then try these steps to inspect the certificate. *open the Servers tab in the Certificate Manager **Options/Preferences -> Privacy & Security<br>Certificates: View Certificates -> Servers: "Add Exception" *paste the URL of the website (https://xxx.xxx) in it's Location field Let Firefox retrieve the certificate -> "Get Certificate" *click the "View" button and inspect the certificate You can find detail like the issuer of the certificate and intermediate certificates in the Details tab.
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Quote

Question owner

https://addons.mozilla.org/

Издатель сертификата узла не распознан.

Форсированное защищённое соединение HTTP (HSTS): true Привязка открытого ключа HTTP (HPKP): true

Цепочка сертификата:


BEGIN CERTIFICATE-----

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END CERTIFICATE-----
BEGIN CERTIFICATE-----

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END CERTIFICATE-----
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cor-el
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17267 solutions 156055 answers

It is possible that you have a corrupted "DigiCert SHA2 Extended Validation Server CA" certificate.

If you can locate this "DigiCert SHA2 Extended Validation Server CA" certificate in the Certificate Manager under the Authorities tab then try to remove this certificate. It should have a "Software Security Device" designation.

Otherwise try to rename the cert9.db (cert9.db.old) file and remove the previously used cert8.db file in the Firefox profile folder with Firefox closed to remove intermediate certificates and exceptions that Firefox has stored. Note that current Firefox releases use a cert9.db SQLite database file.

If that has helped to solve the problem then you can remove the renamed cert9.db.old file. Otherwise you can undo the rename and restore cert9.db.

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:preferences page.

It is possible that you have a corrupted "DigiCert SHA2 Extended Validation Server CA" certificate. If you can locate this "DigiCert SHA2 Extended Validation Server CA" certificate in the Certificate Manager under the Authorities tab then try to remove this certificate. It should have a "Software Security Device" designation. Otherwise try to rename the cert9.db (cert9.db.old) file and remove the previously used cert8.db file in the Firefox profile folder with Firefox closed to remove intermediate certificates and exceptions that Firefox has stored. Note that current Firefox releases use a cert9.db SQLite database file. *https://support.mozilla.org/en-US/kb/what-does-your-connection-is-not-secure-mean If that has helped to solve the problem then you can remove the renamed cert9.db.old file. Otherwise you can undo the rename and restore cert9.db. You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the <b>about:preferences</b> page. *Help -> Troubleshooting Information -> Profile Directory:<br>Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder *http://kb.mozillazine.org/Profile_folder_-_Firefox
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