taskkill /im rdpclip.exe /F

C:\Windows\system32>tasklist |findstr rdpclip
rdpclip.exe                   4700 RDP-Tcp#107                2     12,204 K

C:\Windows\system32>taskkill /im rdpclip.exe /F
SUCCESS: The process "rdpclip.exe" with PID 4700 has been terminated.

C:\Windows\system32>tasklist |findstr rdpclip