Outlook 2003 prompting for password

[jkellington]

Hi,

I have a number of clients (150) running OL2003 on XP connecting to an Exchange 2003 server using RPC over HTTP. In the last little while (couple days), clients have been more frequently being prompted to enter their username and password when they start Outlook. I had originally assumed that this was an RPC problem, but when I set my own account back to use TCP/IP, the problem persists. Any ideas on where to start with this?

Thanks,
Jason