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.

Search Support

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.

Learn More

Secure connection warning appears every time T.Bird is opened.

  • 2 replies
  • 2 have this problem
  • 4 views
  • Last reply by NZLazza

more options

Every time Thunderbird is opened this message appears: Secure connection failed

live.mozillamessaging.com 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>

   This could be a problem with the server's configuration, or it could be someone trying to impersonate the server.
   If you have connected to this server successfully in the past, the error may be temporary, and you can try again later.

Or you can add an exception…


Also, I have had to temporarily resort to Google Chrome as my Firefox also is coming up with error messages when trying to connect to some sites. ( not all ). The messages read: Secure Connection Failed

An error occurred during a connection to warranty.ardexnz.com. Peer's certificate has an invalid signature. Error code: SEC_ERROR_BAD_SIGNATURE

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

Learn more…

Report errors like this to help Mozilla identify and block malicious sites


PLEASE HELP AS I'M NOT GOING TO CONTACT SITE OWNERS!!!

Every time Thunderbird is opened this message appears: Secure connection failed live.mozillamessaging.com 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> This could be a problem with the server's configuration, or it could be someone trying to impersonate the server. If you have connected to this server successfully in the past, the error may be temporary, and you can try again later. Or you can add an exception… Also, I have had to temporarily resort to Google Chrome as my Firefox also is coming up with error messages when trying to connect to some sites. ( not all ). The messages read: Secure Connection Failed An error occurred during a connection to warranty.ardexnz.com. Peer's certificate has an invalid signature. Error code: SEC_ERROR_BAD_SIGNATURE The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the website owners to inform them of this problem. Learn more… Report errors like this to help Mozilla identify and block malicious sites PLEASE HELP AS I'M NOT GOING TO CONTACT SITE OWNERS!!!

All Replies (2)

more options

What anti virus are you using? It sounds like it might be one that performs man in the middle hacking "for your security"

more options

Thanks Matt, I'm using Eset, so I've just contacted them asking if there could be issues between that and the F.Fox / T.Bird systems. I'll keep you posted with their reply.