Obtaining certificate chain for tupms.rpip.tohoku.ac.jp, one moment while we download the tupms.rpip.tohoku.ac.jp certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for tupms.rpip.tohoku.ac.jp failed
Sorry, the request for tupms.rpip.tohoku.ac.jp could not be completed...
We could not load the certificate for tupms.rpip.tohoku.ac.jp, 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.