Update Manager consists of a server part and a plug-in part. You can install the Update Manager server and Update Manager Client plug-in on Windows machines only.

You can install the Update Manager server component either on the same computer as vCenter Server or on a different computer. To improve performance, especially in large-scale environments, install the Update Manager server component on a different computer. After you install the Update Manager server component, to use the Update Manager application, you must install the Update Manager Client plug-in and enable it on the vSphere Client.

You can use Update Manager with a vCenter Server instance installed on a Windows machine or with the VMware vCenter Server Appliance.

The Update Manager 5.0 installer generates a 2048-bit key and self-signed certificate. To replace the self-signed SSL certificate after installation, you can use the Update Manager Utility.

You can install vCenter Server and the Update Manager server in a heterogeneous network environment, where one of the machines is configured to use IPv6 and the other is configured to use IPv4. In this case, to install and enable the Update Manager plug-in, the machine on which vSphere Client is installed must be configured to use both IPv6 and IPv4.

To run and use Update Manager, you must use a local system account for the machine on which Update Manager is installed.

VMware uses designated ports for communication. Additionally, the Update Manager server connects to vCenter Server, ESX/ESXi hosts, and the Update Manager Client plug-in on designated ports. If a firewall exists between any of these elements and Windows firewall service is in use, the installer opens the ports during the installation. For custom firewalls, you must manually open the required ports.