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