The following procedure will walk you through the steps required to perform an in-place upgrade of vCenter and its components using the vCenter installer:
- At first, download the latest version of vCenter 6.5 Windows ISO and map it to the machine running the current version of vCenter 5.5/6.0.
- Browse the contents of the ISO and run the autorun.exe file as a local system administrator or with a user that has local system administrator rights, to bring up the vCenter installer.
- On the vCenter installer screen, click on the Install button to start the installation wizard.
- On the Welcome to VMware vCenter Server 6.5 Installer screen, click on the Next button to continue.
- Accept the EULA and click on the Next button to continue. ...