This article was previously published under Q172902
This article has been archived. It is offered "as is" and will no longer be updated.
When you use the Microsoft Outlook Web Access client and attempt to open anattached mail message, you receive the following error message
The attachment is a type not yet supported
and the attached message does not open. The Outlook Web Access client doesnot currently support opening attached mail messages that are in MSG fileformat. All attached messages will open correctly in the Exchange andOutlook clients.
The Outlook Web Access client does not currently support opening anattached mail message which is in the MSG file format.
You can use the Exchange Windows 3.x, Exchange Windows NT, or ExchangeWindows 95 clients and the Outlook Windows 95 or Outlook Windows NT clientsto successfully open attached mail messages.
Microsoft has confirmed this to be a problem in Microsoft Outlook WebAccess, version 5.0. We are researching this problem and will post newinformation here in the Microsoft Knowledge Base as it becomes available.