You must download updates for the virtual appliances and shut down services on instances of your vRealize Appliance and IaaS servers before you begin the upgrade. Verify the Age of Root Passwords for Virtual AppliancesBefore you upgrade vRealize Automation, you must verify the age of the root passwords for the Identity Appliance, or other SSO appliance, and the vRealize Appliance. Shut Down Services for the Current DeploymentFor high-availability deployments, in which multiple appliances are deployed and configured behind a load balancer, ensure that the vco-server service is disabled on each vCloud Automation Center Appliance or vRealize Appliance in your current deployment before you begin the upgrade. Shut Down vCloud Automation Center Services on Your IaaS Windows ServerBefore you begin the upgrade, shut down vCloud Automation Center services on your IaaS Windows Server. Downloading Virtual Appliance UpdatesYou can check for updates on the Update tab of the VMware vRealize Appliance management console and download the updates by using one of the following methods.