When troubleshooting my Exchange 2007 server recently (O/S: Windows Server 2003 64 bit), I need to reboot it. Each Outlook 2007 client has a local copy of their mailbox, so they can continue working in the program. Every time I reboot the server, each of the clients gets a password request in a pop-up window. I'd like to stop that from happening. I'm hoping for a server-side solution, as it would be very inconvenient to modify each client computer.