WSS Agent installation over Unified Agent
WSS Agent can be installed on top of any previous versions of WSS Agent and Unified Agent.
When upgrading from Unified Agent to WSS Agent, a reboot is still required to fully remove Unified Agent.
A reboot is not required when upgrading from previous versions of WSS Agent to the latest one.
Install the WSS Agent Application talks about the Technical Requirements for installing WSS Agent and ways to install on Windows and macOS.