Invalid version: #### (e.g., Invalid version: 9.0.5.0100.2534290).Error downloading plug-in. URL is unreachable. No route to host.Stale or duplicate service registrations within the vCenter Server Lookup Service. When multiple versions of the vrUi or h5-dr service endpoints are present, the vSphere Client fails to resolve the correct plugin instance, resulting in version mismatch conflicts or connection failures to decommissioned appliance IPs.
/usr/lib/vmware-lookupsvc/tools/lstool.py list --url http://localhost:7090/lookupservice/sdk > /tmp/psc_services.txtvrUi or h5-dr entries with older versions or incorrect IPs: grep -iC4 h5-dr /tmp/psc_services.txt/usr/lib/vmware-lookupsvc/tools/lstool.py unregister --url http://localhost:7090/lookupservice/sdk --user "administrator@vsphere.local" --password '####' --id 'Service_ID_to_Remove'service-control --stop --all && service-control --start --all