Set-up: Windows 2k3 SP1 and Exchange 2k3 SP1 After moving 25 users from one Exchange server to a new Exchange server (same site)… OWA login only works with: - http://FQDN/exchange/username Login dialogue box appears and login is successful OWA login fails with: - http://FQDN/exchange Login dialogue box appears and login but login fails with HTTP Error 404 – File or Directory not found I created a ‘Test User’ on the new Exchange server and that works fine (both of the above login scenarios work) Any ideas anyone?