: If you have the original ISO for vCenter Server 5.5, the vSphere Client is included as an optional component within the installation media. Installation & System Requirements
Before attempting to download, it is vital to understand that vSphere 5.5 utilizes two different management interfaces: download vsphere client 5.5
: The installer requires Microsoft .NET 3.5 SP1 . If it is not present, the installer will attempt to install it automatically. Key Features of Version 5.5 How to purchase vSphere Client? - Broadcom Community : If you have the original ISO for vCenter Server 5