We just replaced a XP box with a new Windows 7 64bit box. I joined it to our local domain and setup Outlook to receive mail via our Exchange Server. It is the same setup I used on the XP box and all was working. Now I can not get the new Windows 7 box to connect to the exchange server in Outlook. I tried to connect to the exchange server by mapping a drive letter to it just to see if I could actually connect to it. I was prompted for username and password and could log on with the users info. Without logging out or restarting I tried Outlook again, it prompted me to enter username and password (which it accepted) but still would not connect to exchange. I restarted the computer, logged in as the user, went to map a drive letter to the exchange again, and when prompted I logged in with the domain admin username and password and then tried Outlook, it prompted me for username and password, I used the users login credentials and it worked. All looks and runs great until restart. Then I have to follow the same login with admin username and password first. It seems to me like a security restriction somewhere, but I'm just guessing. Any assistance is appreciated.