Right, just binned netbeui and added the 'NWLink IPX/SPX/NetBIOS Compatible Transport Protocol' on the Win2k box and the Notes server starts up just fine and the client can still connect - so it isn't that. It doesn't need Netbeui, it needs NetBIOS. Furthermore, the section in Notes.ini has the following entries Code: LAN0=NETBIOS, 0, 15, 0 Ports=LAN0,TCPIP SPX=NWSPX, 0, 15, 0 VINES=VINES, 0, 15, 0 TCPIP=TCP,0,15,0,,12288, which leads me to believe it's using TCP/IP over NetBIOS. Any more ideas? Best Regards, Paul.