You cannot use 2007 Office applications to open or edit content in a Web application that uses forms-based authentication

You create a Web application that hosts a SharePoint site that uses forms-based authentication. You cannot use 2007 Microsoft Office applications to open or edit content that is hosted in the Web application.

For example, if the application is configured to use an Active Directory Federation Services (ADFS) HTTP module class during forms-based authentication, you cannot fully use all the client integration features in SharePoint.

To resolve this problem in Windows Vista, install Windows Vista Service Pack 2, which is released on July 01, 2009. Also, apply the 2007 Office system hotfix package that is dated April 30, 2009.

To resolve this problem in Windows XP, apply the 2007 Office system hotfix package that is dated April 30, 2009. For more information about the 2007 Office system hotfix package that is dated April 30, click the following article number to view the article in the Microsoft Knowledge Base:

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

For more information about forms authentication in SharePoint Products and Technologies, visit the following Microsoft Web site: