I have office 2007 installed on a windows xp computer. when I try to connect to Microsoft exchange the password is not accepted. I have put the same account on a windows 7 computer in office 2007, on an iPhone, and I have no trouble using owa to connect to the web interface for the exchange server. Microsoft is hosting this exchange. I don't have any specific firewall that is blocking this. I have tried the auto configure and the manual configure and I get to the same problem. It keeps asking for the password.