Greetings. I am having the same problem on both my Windows Vista machines running Outlook 2007. Periodically, a popup displays asking me to log in to our Hotmail accounts. The id's and passwords are already in the fill in boxes. When I hit OK the popup displays again. This usually takes 2 or 3 attempts before it stops.. Sometimes, it never comes back and I have to delete the accounts and recreate them to fix the problem. This problem does not occur on our other accounts. Nor does it happen on my Windows XP machine running Outlook 2003. Has anyone else had this problem? Did you find a solution?