This section describes how to upgrade vCenter Servers from 7.0 U2d to 7.0 U3c in Active, Passive, and Witness nodes, if your vCenter Server Appliance is configured in a vCenter High Availability (HA) cluster.
Prerequisites
Follow the Prerequisites for Upgrading vCenter Server High Availability Environments.
Note:
The upgrade sequence of vCenter Server VMs must be Witness => Passive => Active.
Procedure
Results
vCenter Server is upgraded successfully and all services are up and running.