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