Obtaining certificate chain for staffpass.ntu.ac.uk, one moment while we download the staffpass.ntu.ac.uk certificate and related intermediate certificates...
Refreshing certificate chain and revocation status for staffpass.ntu.ac.uk, one moment while we re-check the staffpass.ntu.ac.uk certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for staffpass.ntu.ac.uk failed
Sorry, the request for staffpass.ntu.ac.uk could not be completed...
We could not load the certificate for staffpass.ntu.ac.uk, 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.