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