Unity Asset Server 2.0

Unity Asset Server is a software application that enables users to create projects and manage users on the Asset Server. To install Unity Asset Server, simply download the installer executable file and run it with administrator privileges. After installation, users can launch Unity and begin creating projects and users.

Simply download the installer exe file and execute it to launch the installer. You have to have administrator privileges on the machine to install it.
After installing, you should be able to fire up Unity and use it to create projects and users on the newly installed Asset Server.