Question

does anyone know why i get the error “DirectCast(err, SetupApiError) = InWow64 {-536870347}” when running the code below? i get this error when it calls the SetupDiCallClassInstaller method on the line: Case SetupApiError.NoAssociatedClass To SetupApiError.OnlyValidateViaAuthenticode

Throw New Win32Exception("SetupAPI error: " & DirectCast(err, SetupApiError).ToString)

Dim result As Boolean = SetupDiSetClassInstallParams(handle, diData, params, Marshal.SizeOf(params))
    If result = False Then Throw New Win32Exception
    result = SetupDiCallClassInstaller(DiFunction.PropertyChange, handle, diData)
    If result = False Then
        Dim err As Integer = Marshal.GetLastWin32Error
        Select Case err
            Case Is = SetupApiError.NotDisableable
                Throw New ArgumentException("That device can't be disabled! Look in the device manager!")
            Case SetupApiError.NoAssociatedClass To SetupApiError.OnlyValidateViaAuthenticode
                Throw New Win32Exception("SetupAPI error: " & DirectCast(err, SetupApiError).ToString)
            Case Else
                Throw New Win32Exception
        End Select
    End If

Answer 1

It is unhappy that you are calling SetupDiCallClassInstaller() from a 32-bit process running on the 64-bit version of Windows. That’s easy to fix in a managed program. Right-click your EXE project, Properties, Compile tab, scroll down, Advanced Compile Options button. Change the Target CPU setting from x86 to AnyCPU.