I am using Outlook 2007 to connect to Exchange my Small Business Server 2003 server. It has been setup for over a year with no problems. Today I rebooted my computer and now Outlook cannot connect to the Exchange server. I tried removing the Exchange account from my Mail Settings (through control panel), but when I try to add it back it says "Connection to Microsoft Exchange is unavailable". I have not change any settings on my computer. The last software that was installed was Tom Tom home (GPS navigation software). I have other computers on the network and they can connect with no problems. I also logged onto another computer with my credentials and was able to add my Exchange account there. So it definitely sounds like an issue just with this computer. Any suggestions, besides reloading the OS, would be greatly appreciated.