Здравствуйте, pyvadminpyv, Вы писали:
...
P>В чем может быть проблема?

У меня без проблем работает на W2K3 + FW1.1

Client.vb

Imports System
Imports System.Runtime.Remoting
Imports System.Runtime.Remoting.Channels
Imports System.Runtime.Remoting.Channels.Tcp

Module Module1

  Sub Main()
    Dim channel As New TcpClientChannel
    ChannelServices.RegisterChannel(channel)
    RemotingConfiguration.RegisterWellKnownClientType(GetType(RemoteClass), _
      "tcp://localhost:1234/clock")
    Dim clk As New RemoteClass
    Console.WriteLine(clk.RemoteProperty)
    Console.WriteLine("Enter - Exit")
    Console.ReadLine()
  End Sub

End Module

Server.vb

Imports System
Imports System.Runtime.Remoting
Imports System.Runtime.Remoting.Channels
Imports System.Runtime.Remoting.Channels.Tcp

Module Module1

  Sub Main()
    Dim channel As New TcpServerChannel(1234)
    ChannelServices.RegisterChannel(channel)
    RemotingConfiguration.RegisterWellKnownServiceType(GetType(RemoteClass), _
      "Clock", WellKnownObjectMode.SingleCall)
    Console.WriteLine("Enter - Exit")
    Console.ReadLine()
  End Sub

End Module

RemoteableType.vb

Imports System

Public Class RemoteClass
  Inherits MarshalByRefObject
  Public ReadOnly Property RemoteProperty() As String
    Get
      Return "Time on server now: " & DateTime.Now.ToLongTimeString
    End Get
  End Property
End Class

Транслировать:

vbc /t:library /r:System.dll /out:RemoteableType.dll RemoteableType.vb

vbc /r:System.Runtime.Remoting.dll /r:System.dll /r:RemoteableType.dll /out:Server.exe Server.vb

vbc /r:System.Runtime.Remoting.dll /r:System.dll /r:RemoteableType.dll /out:Client.exe Client.vb

Peter