403 Access Forbiden

Dim words() As String = Response.Split(New Char(){","c})
            Dim pic_url As String = ""
            Dim urs() As String = Response.Split("""profile_pic_url""")
            Dim locationn As String = "C:\picture.jpg"
            For Each picurl As String In urs
                If picurl.Contains(".jpg") Then
                    pic_url = picurl
                Else

                End If
            Next

            Dim fileExists As Boolean
            fileExists = My.Computer.FileSystem.FileExists("C:\picture.jpg")

            If fileExists = True Then
                My.Computer.FileSystem.DeleteFile("C:\picture.jpg", FileIO.UIOption.AllDialogs, FileIO.RecycleOption.SendToRecycleBin)
            Else
                Try
                    Dim picture As New WebClient()
                    picture.DownloadFile(pic_url, locationn)
                    PictureBox2.Load(locationn)
                Catch ex As Exception
                    MsgBox(ex.Message)
                End Try
            End If