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certificate from php.net is not trusted by Firefox, but is trusted by IE

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  • Last reply by philipp

oneworld
oneworld
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When I go to https://php.net in Firefox, I get a "This Connection is Untrusted" error message. The technical details say "php.net uses an invalid security certificate. The certificate is not trusted because no issuer chain was provided. (Error code: sec_error_unknown_issuer)". But there is no problem connecting to https://php.net using IE or Chrome, and no problem if I go to other HTTPS sites using Firefox.

This page [1] says "you may have enabled SSL scanning in your security software such as ESET or BitDefender", but I don't have any of these software installed on my computer.

So could anyone tell me why Firefox tells me the certificate is not trusted? Thanks!

[1] https://support.mozilla.org/en-US/kb/connection-untrusted-error-message#w_the-certificate-is-not-trusted-because-no-issuer-chain-was-provided

When I go to https://php.net in Firefox, I get a "This Connection is Untrusted" error message. The technical details say "php.net uses an invalid security certificate. The certificate is not trusted because no issuer chain was provided. (Error code: sec_error_unknown_issuer)". But there is no problem connecting to https://php.net using IE or Chrome, and no problem if I go to other HTTPS sites using Firefox. This page [1] says "you may have enabled SSL scanning in your security software such as ESET or BitDefender", but I don't have any of these software installed on my computer. So could anyone tell me why Firefox tells me the certificate is not trusted? Thanks! [1] https://support.mozilla.org/en-US/kb/connection-untrusted-error-message#w_the-certificate-is-not-trusted-because-no-issuer-chain-was-provided

Chosen solution

hello, unfortunately this is an issue caused by the website, which uses an intermediary certificate but doesn't properly implement a trusted path to the root certificate authority.

in order to work around that you'd have to manually install the missing certificate and trust it to verify websites in firefox: https://ssl-tools.net/certificates/a1e08f9a6a21691dc96bc3b9fa59a7cadd6d4cc4.pem

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philipp
philipp
  • Moderator
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Chosen Solution

hello, unfortunately this is an issue caused by the website, which uses an intermediary certificate but doesn't properly implement a trusted path to the root certificate authority.

in order to work around that you'd have to manually install the missing certificate and trust it to verify websites in firefox: https://ssl-tools.net/certificates/a1e08f9a6a21691dc96bc3b9fa59a7cadd6d4cc4.pem