ARCHIVED: In Outlook Web Access, why am I unable to view some attachments?
When you attempt to view an attachment using Outlook Web Access (OWA), you may receive the following error message:
OWA does not support email messages in the
"The attachment is a type not yet supported".
.msgformat. However, you can view such messages with no problem using either the Outlook or Exchange clients.
For more information, see article 172902 in Microsoft's knowledge base.
Last modified on August 27, 2012.