Microsoft has released an update for Microsoft Office 2010. This update provides the latest fixes for the 32-bit and the 64-bit editions of Office 2010. Additionally, this update contains stability and performance improvements.
Issue that this update fixes
Assume that you configure a SharePoint server that does not require credentials and a proxy server that requires credentials. However, when you try to use Office 2010 to open a file on the SharePoint server, Office 2010 does not set the proxy credential correctly.