Clients Running Windows 95, Windows NT Server, and Windows NT Workstation

By default, Microsoft Exchange Client uses the following RPC binding order for Microsoft Windows 95, Windows NT Server, and Windows NT Workstation when attempting to connect to a server:

  1. Transmission Control Protocol/Internet Protocol (TCP/IP)
  2. SPX
  3. Named pipes
  4. NetBIOS
  5. VINES IP (Windows NT Server and Windows NT Workstation only)

You can change the RPC binding order for clients running Windows 95, Windows NT Workstation, and Windows NT Server before or after you have installed Microsoft Exchange Client.

Before installation In Setup Editor, select the Binding Order property page.

After installation Use the Registry Editor to modify the binding order in HKEY_LOCAL_MACHINE\Microsoft\Exchange\Exchange Provider. For example, the following entry attempts to establish SPX, TCP/IP, and NetBIOS connections in the order indicated. 

RPC_Binding_Order=ncacn_spx,ncacn_ip_tcp,netbios