Connecting to a network printer on Windows 11 and getting Error 0x00000709

in Regedit add or change

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\Printers\RPC]

There are 2 values that can be configured:

RpcUseNamedPipeProtocol REG_DWORD

0: RpcOverTcp (default)
1: RpcOverNamedPipes

 

1 works