The industry has moved to HTML5. Learning the web client is the correct path forward.
It is available on VMware’s old download portal (requires login), but again, this is not recommended for production or security-sensitive environments . download vsphere client for windows
Managing your virtual environment effectively starts with having the right tools. If you are looking to , it is essential to understand that the "thick client" or "fat client" (the C#-based application) has undergone significant changes in recent years. The industry has moved to HTML5
If you are setting up a single host and don't want to navigate the portal: download vsphere client for windows