Hi,

I built a client/server application that have a server component (authorization.dll). When I deloyed the server component on COM+ on windows 2000 server OS and client on windows 2000 (on the same domain). It worked well.

But when I deloy server component on windows 2000 server and client on windows 98 (I log in domain with administrator right). I get the following error message:

-2147023149- Automation error
The authentication service unknown

Could you please tell me how to resolve this problem?

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These are codes on my server compenent:
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Const modName = "Authorization.UserManage"

Private Declare Function NetUserChangePassword Lib "NETAPI32.DLL" (ByVal domainname As String, ByVal userName As String, ByVal oldpassword As String, ByVal newpassword As String) As Long

Public Function CheckUser(sComputerName As Variant, sUserName As Variant, sPassword As Variant) As Variant
Dim rc As Long
On Error GoTo ErrorHandle
rc = NetUserChangePassword(StrConv(sComputerName, vbUnicode), StrConv(sUserName, vbUnicode), StrConv(sPassword, vbUnicode), StrConv(sPassword, vbUnicode))
CheckUser = rc
Exit Function
ErrorHandle:
Err.Raise Err.Number, SetErrSource(modName, "Customer Information"), Err.Description
End Function

Public Function Login(sUserName As Variant, sPassword As Variant) As Variant
Dim conn As ADODB.Connection
Dim Rs As ADODB.Recordset
Dim ctxObject As ObjectContext
Dim strComputerName As String

On Error GoTo ErrorHandle
Login = 1
Set ctxObject = GetObjectContext()
Set conn = ctxObject.CreateInstance("ADODB.Connection")
conn.Open "DSN=" & SYSDSNBDS & ";UID=" & DB_USERNAME & ";PWD=" & RetrieveProperty("SecuInfo", "PWSA") & ";"
strSQL = "SELECT * FROM TLPROFILES WHERE TLName='" & sUserName & "'"
strComputerName = GetComputerName
If CheckUser(strComputerName, sUserName, sPassword) <> 0 Then Exit Function
Set Rs = ctxObject.CreateInstance("ADODB.Recordset")
Rs.Open strSQL, conn, adOpenForwardOnly, adLockReadOnly
If Rs.EOF Then Exit Function

ctxObject.SetComplete
Login = 0
Exit Function
ErrorHandle:
' Clean up object on the way out.
If Not conn Is Nothing Then
Set conn = Nothing
End If

' Roll back MTS transaction set.
ctxObject.SetAbort
Err.Raise Err.Number, SetErrSource(modName, "Customer Information"), Err.Description
End Function

Public Function GetUserInfo(sUserName As Variant) As ADODB.Recordset
Dim conn As ADODB.Connection
Dim Rs As ADODB.Recordset
Dim ctxObject As ObjectContext

On Error GoTo ErrorHandle
Set ctxObject = GetObjectContext()
Set conn = ctxObject.CreateInstance("ADODB.Connection")
conn.Open "DSN=" & SYSDSNBDS & ";UID=" & DB_USERNAME & ";PWD=" & RetrieveProperty("SecuInfo", "PWSA") & ";"
strSQL = "SELECT * FROM TLPROFILES WHERE TLName='" & sUserName & "'"
Set Rs = ctxObject.CreateInstance("ADODB.Recordset")
Rs.Open strSQL, conn, adOpenForwardOnly, adLockReadOnly
ctxObject.SetComplete
Set GetUserInfo = Rs
Exit Function
ErrorHandle:
' Clean up object on the way out.
If Not conn Is Nothing Then
Set conn = Nothing
End If

' Roll back MTS transaction set.
ctxObject.SetAbort
Err.Raise Err.Number, SetErrSource(modName, "Customer Information"), Err.Description
End Function

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These are codes on my login form:
=====================================

Option Explicit

Public LoginSucceeded As Boolean

Private Sub cmdCancel_Click()
'set the global var to false
'to denote a failed login
LoginSucceeded = False
'Me.Hide
Unload Me
End Sub

Private Sub cmdOK_Click()
Dim objAutho As Authorization.UserManage
Dim Rs As ADODB.Recordset

On Error GoTo ErrorHandle

Set objAutho = CreateObject("Authorization.UserManage")
'strComputerName = GetComputerName
'check for correct password
If objAutho.Login(Trim(txtUserName), txtPassword) = 0 Then
'place code to here to pass the
'success to the calling sub
'setting a global var is the easiest
Set Rs = New ADODB.Recordset
Set Rs = objAutho.GetUserInfo(Trim(txtUserName))
USERID = Rs("TLNAME")
USERSUBBRID = Rs("TLSUBBRID")
If USERSUBBRID <> RetrieveProperty("SecuInfo", "BRID") Then
MsgBox "Branch ID is not valid!", , "Login"
txtPassword.SetFocus
SendKeys "{Home}+{End}"
Exit Sub
End If
frmMain.Show
LoginSucceeded = True
'Me.Hide
Unload Me
Else
MsgBox "Invalid Password, try again!", , "Login"
txtPassword.SetFocus
SendKeys "{Home}+{End}"
End If
Exit Sub
ErrorHandle:
MsgBox Err.Number & "- " & Err.Source & " - " & Err.Description
End Sub

Private Sub Form_Load()
On Error GoTo ErrorHandle
Dim obj As Authorization.Sysvar
Dim objHost As SBAuthorization.SBSysvar
Set obj = CreateObject("Authorization.Sysvar")
Call obj.LoadSysvar
Set objHost = CreateObject("SBAuthorization.SBSysvar")
Call objHost.LoadSysvar
Exit Sub
ErrorHandle:
MsgBox Err.Number & " - " & Err.Description
End Sub

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When I click on the OK button I get the above error

Thanks in advance,

Trung Luu