The View Connection Server upgrade process has specific requirements and limitations.

View Connection Server requires a valid license key for View 5.0. As of the release of VMware View 4.0, the VMware View license key is a 25-character key.

The domain user account that you use to install the new version of View Connection Server must have administrative privileges on the View Connection Server host. The View Connection Server administrator must have administrative credentials for vCenter Server.

If you plan to perform fresh installations of View Connection Server instances on additional physical or virtual machines, see the complete list of installation requirements in the VMware View Installation document.