@FrankDenneman serieus hè
This message appears if the Service Console does not have network redundancy configured properly and can be safely ignored.
To suppress this message on ESX hosts in the VMware High Availability (HA) cluster or if the warning appears for a host already configured in a cluster, set the VMware HA advanced option das.ignoreRedundantNetWarning to true and reconfigure VMware HA on that host.
The solution for me if the warning continues to appear, disable and re-enable VMware High Availability in the cluster.
note: There is a VMware Knowledge Base article about this issue