Obtaining certificate chain for macoffcampus.mcmaster.ca, one moment while we download the macoffcampus.mcmaster.ca certificate and related intermediate certificates...
Revocation check via OCSP and CRL for macoffcampus.mcmaster.ca failed
Sorry, the request for macoffcampus.mcmaster.ca could not be completed...
We could not load the certificate for macoffcampus.mcmaster.ca, 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.