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