The vCenter server is not accessible
$ service-control --status --allRunning:applmgmt lookupsvc lwsmd observability-vapi vc-wsla-broker vmafdd vmcad vmdird vmware-certificateauthority vmware-cis-license vmware-eam vmware-envoy vmware-envoy-hgw vmware-envoy-sidecar vmware-infraprofile vmware-postgres-archiver vmware-rhttpproxy vmware-sca vmware-stsd vmware-trustmanagement vmware-vapi-endpointvmware-vmon vmware-postgres vmware-iu vtsdbStartPending:vmware-vpxdStopped:observability pschealth vicm vmonapi vmware-analytics vmware-certificatemanagement vmware-content-library vmware-hvc vmware-imagebuilder vmware-netdumper vmware-perfcharts vmware-pod vmware-rbd-watchdog vmware-sps vmware-topologysvc vmware-updatemgr vmware-vcha vmware-vdtc vmware-vpxd-svcs vmware-vsan-healthVMware vCenter Server 8.x
The solution user certificates have expired.