After initiating a Client Push Install, one or more endpoints display the following error message:
RPC server is unavailable. Please allow WMI through Windows Firewall.
Your Group Policy's firewall does not meet the prerequisites needed for a Client Push Install. Windows Management Instrumentation (WMI) is not enabled on your firewall. Without Windows Management Instrumentation, Remote Procedure Call (RPC) cannot establish a connection between the endpoint and server.
Configure your Group Policy's firewall to meet the following prerequisites:
To see instructions for Windows Firewall, refer to the article Firewall prerequisites to deploy clients via Group Policy.
You can also use Command Prompt to configure the prerequisites above. Execute the commands below on each endpoint experiencing the error.