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