how to access vista system remotely ?

Hello Meenakshi
You need to check remote registry service on that vista machine it is required, in xp machines startup type of this service is  automatic(default) but not in vista...i have described in previous post
so check this setting and try again....if you have any problem let me know.
thanks

Hi,

   Thanks, I can access all xp machines registry,But i want to get  access vista  machine.

I have the function for accessing  vista by giving username,password of the vista system,

########################

 'WearDrag("x", "y", "z")
 'Dim environmentKey As RegistryKey
    
        environmentKey = RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, "Remotemachine")

Public Function WearDrag(ByRef Username As String, ByVal Password As String, ByVal DomainOrMachine As String) As WindowsImpersonationContext

        Dim impersonationContext As WindowsImpersonationContext
        Dim tempWindowsIdentity As WindowsIdentity
        Dim token As IntPtr = IntPtr.Zero
        Dim tokenDuplicate As IntPtr = IntPtr.Zero

        If (RevertToSelf()) Then

            If (LogonUserA(Username, DomainOrMachine, Password, LOGON32_LOGON_NEW_CREDENTIALS, LOGON32_PROVIDER_DEFAULT, token)) Then

                If (DuplicateToken(token, 2, tokenDuplicate) <> 0) Then
                    tempWindowsIdentity = New WindowsIdentity(tokenDuplicate)
                    impersonationContext = tempWindowsIdentity.Impersonate()
                    If Not IsDBNull(impersonationContext) Then
                        CloseHandle(token)
                        CloseHandle(tokenDuplicate)
                        Return impersonationContext
                    End If
                End If
            End If
        End If
        If (token <> IntPtr.Zero) Then CloseHandle(token)
        If (tokenDuplicate <> IntPtr.Zero) Then CloseHandle(tokenDuplicate)
        Return Nothing
    End Function
############################

But i want to get access by giving the ip address or machine name.

Please help me

Hello Meenakshi
What function , you are using for accesing registry system???  Ok..
According to you you can access all xp machine's registry except vista, it can happen,because Vista is rich security in compare of other xp operating systems..you need to check that Remote Registry services is running or not on that vista machine, it requires service to be running on the remote computer .
You cancheck this goto Run, type Services.msc, and see 'Remote Registry'. i think after that you can solve your problem.. one more thing you have enough permission also for access remote registry system
you can use this sample code
Dim tempKey As Microsoft.Win32.RegistryKey
tempKey = Microsoft.Win32.RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, "Put your machine name")
 
thanks
Please mark as answere if it helps