These messages are from the Host Checker feature. Your corporate IT group has set policy checks on the computers that are allowed to have VPN access. From the looks of it you must be connecting from and corporate owned computer. The certificate failure is likely from an internal CA that needs to be installed on the corporate machine. The AV error is from the system not having the current corporate AV version and patch level active. The corporate help desk is apparently aware of how to remediate these if this is a corporate computer needing remote access since they provide that information.
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