Partial Class Customers_Customers Inherits System.Web.UI.MasterPage Protected Sub LogoutButton1_Click(sender As Object, e As EventArgs) MsgBox("Logged out!") FormsAuthentication.SignOut() Session.Clear() 'clear session Session.Abandon() 'Abandon session Response.Cache.SetExpires(DateTime.UtcNow.AddMinutes(-1)) Response.Cache.SetCacheability(HttpCacheability.NoCache) Response.Cache.SetNoStore() Response.Redirect("../newpageJulius_Sidebar.aspx") End Sub End Class