We are opening an Excel workbook through a hyperlink. The workbook contains VBA code that opens a Microsoft Outlook "Send Message" dialog box. The macro works fine when we open Excel and run it, but it won&#039;t work when we run it through the browser. The message we get is "Unable to get the Show property of the Dialog class". The code used is: Result = Application.Dialogs(xlDialogSendMail).Show(Range(" A1"), "Subject")<BR><BR>Thanks for your help.