Article ID: 950675 - View products that this article applies to.
You use Microsoft Outlook Web Access (OWA) 2007 to access a mailbox on a computer that is running Microsoft Exchange Server 2007 Service Pack 1. When you download an .xls file attachment and then try to open the file, the downloaded file is empty.
This problem occurs if the .xls file contains XML data. In Exchange Server 2007, if a file that contains XML data is attached to a message, the XML content in files is removed when you open or save the attachment by using OWA.
To resolve this problem, install Update Rollup 6 for Exchange 2007 Service Pack 1.
For more information about Update Rollup 6 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic:
Description of Update Rollup 6 for Exchange Server 2007 Service Pack 1For more information about how to obtain the latest Exchange service pack or update rollup, see the following Exchange Help topic:
How to Obtain the Latest Service Pack or Update Rollup for Exchange 2007
The hotfix provides a new option named "BypassOwaXmlAttachmentFiltering" in the "appSettings" section in the Web.Config file:
This file is in the following location:
Program Files\Microsoft\Exchange Server\ClientAccess\OwaThe BypassOwaXmlAttachmentFiltering option lets you disable XML attachments.
Note If the value of the BypassOwaXmlAttachmentFiltering option is set to "true," you may see the XML context on the attachment.
Important You have to set the .xls file extension name in the Force Save list in the Direct File Access Setting page in the Exchange Management Console for the hotfix to work. To set a file type in the Force Save list, follow these steps.
For more information about the Force Save list, visit the following Microsoft Web site:
http://technet.microsoft.com/en-us/library/bb691004.aspxFor more information about how to manage public and private computer file access, visit the following Microsoft Web site:
http://technet.microsoft.com/en-us/library/bb124232.aspxFor more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/958881/ )All HTML content in attachment files of messages is run through an HTML filter when you open or save the attachment by using Outlook Web Access (OWA)
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 950675 - Last Review: May 20, 2009 - Revision: 2.1