Running a shell in RDP(remote desktop)

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C#

remote-control

WMI

RDP

hi i need to run a batch file into a list of rdps by code.
i use wmi and somehow blocked by firewall or something
then test psexec and also failed.

for now i hope to run psexec after connecting each rdp, using the current connection.
but still got no idea about it.
please help

What I have tried:

WMIC [/node:ip] /user:usern pass] command
and also check every feature of its setting. all the time got "RPC server not available"

PSexec [-i sessionid .... or ...\\node -u user -p pass][ -c -d shell.bat]

rdp commands...