Paul Liebrand's Weblog

Update – 7/2/2009
The Office 2007 hotfix (KB970950) is now available to download:
http://support.microsoft.com/kb/970950
The specific bullet that resolves this problem states the following:
“When you view folders that are listed under My SharePoint Sites in the Open dialog box or the Save As dialog box in a 2007 Office application, you are prompted for authentication. This problem occurs [...]

UPDATE 06/12/2008: A possible cause of this issue could be that the user has set an invalid URL for their profile picture. We had a user set their profile picture to point to a web page that contained their picture instead of the picture itself. The error message states something about the URL containing invalid [...]

Recently we started experiencing a Windows authentication dialog box popping up on end-users computers asking for username and password when they launched an Office 2007 application for the first time of the day. After troubleshooting the issue we determined that the end-user was no longer a member of a site that was propagated to the [...]

In previous posts I have discussed the concepts around the MOSS 2007 Membership functionality (see the Office 2007 and User Memberships post). This post talks about the location of the My SharePoint Sites and how it gets populated. Once again, the My SharePoint Sites functionality is new to Office 2007 and requires you establish your [...]

A new and often misunderstood feature of Microsoft Office SharePoint Server ("MOSS") 2007 is the concept of user memberships. The user membership information is rendered through a few different surfaces within the SharePoint environment.
The following is a list of places the membership information is used and surfaced:
1. Users My Site

2. Top Navigation Bar via the [...]