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I cant open attachments from my email service fastmail.

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  • آخر ردّ كتبه FredMcD

cameron4
cameron4
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I get an error from Mozilla when trying to open a pdf from my fastmail account. See screenshots. I think its a certifugate that needs to be installed but for the life of me I can't find it.

I get an error from Mozilla when trying to open a pdf from my fastmail account. See screenshots. I think its a certifugate that needs to be installed but for the life of me I can't find it.
Attached screenshots

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FredMcD
FredMcD
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There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connection certificates and send their own.

https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can

https://support.mozilla.org/en-US/kb/firefox-and-other-browsers-cant-load-websites

https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message

https://support.mozilla.org/en-US/kb/connection-untrusted-error-message

Websites don't load - troubleshoot and fix error messages

http://kb.mozillazine.org/Error_loading_websites

What do the security warning codes mean


  • MOZILLA_PKIX_ERROR_MITM_DETECTED
  • uses an invalid security certificate SSL_ERROR_BAD_CERT_DOMAIN
  • configured their website improperly

How to troubleshoot the error code "SEC_ERROR_UNKNOWN_ISSUER" on secure websites https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER