Determine whether you want to manage some endpoints by proxy or to place an agent on each computer containing one or more endpoints. For more information, see Section 2.6, Understanding Management by Proxy.
Ensure that the computers where you want to install the Windows agent can communicate with Core Services and with all endpoints that you want to manage by proxy. For more information, see Section 2.5, Understanding Windows Agent Communication.
(Conditional) To upgrade the agents from a version older than 5.9, run the Asset Details and Discovery scheduled job to ensure that Secure Configuration Manager has the appropriate agent domain and computer names.
Ensure that the Deployment Agent has appropriate permissions for deploying to the target computers. For more information, see Understanding the Deployment Agent.