In case of problems you can troubleshoot your environment. The task you need to perform depends on the failure symptoms. For additional troubleshooting information, see the VMware Knowledge Base system.
vCenter HA Clone Operation Fails During Deployment If the vCenter HA configuration process does not create the clones successfully, you have to resolve that cloning error.
Redeploy the Passive or Witness node If the passive or witness node fails and vCenter HA cluster was configured using the automatic cloning method, you can redeploy it in the vCenter HA Settings page.
vCenter HA Deployment Fails with an Error Deployment failures can be caused by configuration issues, especially problems with the networking setup.
Troubleshooting a Degraded vCenter HA Cluster For a vCenter HA cluster to be healthy, each of the Active, Passive, and Witness nodes must be fully operational and be reachable over the vCenter HA cluster network. If any of the nodes fails, the cluster is considered to be in a degraded state.
Recovering from Isolated vCenter HA Nodes If all nodes in a vCenter HA cluster cannot communicate with each other, the Active node stops serving client requests.
Resolving Failover Failures When a Passive node does not become the Active node during a failover, you can force the Passive node to become the Active node.
VMware vCenter ® HA Alarms and Events If a vCenter HA cluster is in a degraded state, alarms and events show errors.