Exception from HRESULT: 0x80040104

Hi all,

I am getting the below error
Exception from HRESULT: 0x80040104

I want to maximize or minimize the web browser control for the FTP site. the code is below but gives error..

Code:

---

  Private Enum Exec
        OLECMDID_OPTICAL_ZOOM = 63
    End Enum

    Private Enum execOpt
        OLECMDEXECOPT_DODEFAULT = 0
        OLECMDEXECOPT_PROMPTUSER = 1
        OLECMDEXECOPT_DONTPROMPTUSER = 2
        OLECMDEXECOPT_SHOWHELP = 3
    End Enum


 Try
            Dim Res As Object = Nothing
            Dim MyWeb As Object
            MyWeb = Me.WebBrowser2.ActiveXInstance
            MyWeb.ExecWB(Exec.OLECMDID_OPTICAL_ZOOM, execOpt.OLECMDEXECOPT_PROMPTUSER, 20, IntPtr.Zero)

        Catch ex As Exception
            MsgBox(ex.Message)
        End Try

---

Give me solution