Obtaining certificate chain for dyu.edu.tw, one moment while we download the dyu.edu.tw certificate and related intermediate certificates...
Refreshing certificate chain and revocation status for dyu.edu.tw, one moment while we re-check the dyu.edu.tw certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for dyu.edu.tw failed
Sorry, the request for dyu.edu.tw could not be completed...
We could not load the certificate for dyu.edu.tw, it might not exist or we could not reach the server, complete the TLS handshake, etc.
Revoked certificates can't and should not be trusted, these certificate will cause errors like "NET::ERR_CERT_REVOKED" in browsers and expose a security risk.