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thunderbird does not connect to mozilla, nor can firefox gets the same message, and cannot add exception

  • 3 replies
  • 1 has this problem
  • 17 views
  • Last reply by Toad-Hall

nicholas2
nicholas2
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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…

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…

All Replies (3)

Wayne Mery
Wayne Mery
  • Moderator
  • Top 10 Contributor
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What are the full and precise steps that lead you to gettin gthis error?

nicholas2
nicholas2 Question owner
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start thunderbird, update thunderbird, unpdate firefox, mozilla products are not ale to get to mozilla.org

only used mozilla products since they started, now firefox is useless as cand connect to numerous web pages

Toad-Hall
Toad-Hall
  • Top 10 Contributor
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Located similar issue:

Suggest you reboot computer in 'Safe mode with networking' then run scans to see if there is any malware.