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