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