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