Microsoft Windows 11 22H2 clients refuse to talk to UCS Samba print servers

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Problem:

After updating to 22H2 a Microsoft Windows 11 clients refuses to talk to a UCS Samba print server.

Symptoms

  • While the Windows 10 printmanagement app can connect to UCS Samba DCs, the Windows 11 22H2 printmanagement app doesn’t show printers and uploaded drivers. After a short while of adding the UCS Samba print server FQDN to the list of servers in the GUI app, it shows a red down-arrow next to the UCS server icon.

  • Accessing the printer from Windows explorer (<Windows-e> and enter the UNC path \\ucs.server.fqdn\ and then double click on any of the shown printer shares) fails with:

 Operation could not be completed (error 0x00000709).
 Double check the printer name and make sure that the printer is connected to the network.

Solution

This is due to a change in the 22H2 update of Microsoft Windows 11, see this MS forum entry ( or directly here).

The behavior can be adjusted either

  • via GPO: enable "Administrative Templates>Printers>Configure RPC connection settings" and select "RPC over named pipes".
  • via local regedit: Create new DWORD value in [HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\Printers\RPC] named "RpcUseNamedPipeProtocol" and set it to 1 (switching to RpcOverNamedPipes instead of RpcOverTcp).
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