I've been running Exchange 2007 for 1 year now and everything worked fine since i notified a strange behaviour highlighted by my users.
If OWA is enabled on Outlook 2007 and the option "On fast networks,connect using HTTP first , the connect using TCP/IP" is selected , Outlook keeps asking for the password to connect , even if you are logged into the domain and connected to the company's network.
I'm sure that this option has been ALWAYS selected before ( i upgraded the server in the meanwhile , last update was the rollup 4 if i'm not wrong) and everything worked smoothly for almost 1 year.
If i select,instead, "On slow networks,connect using HTTP first,then connect using TCP/IP" it uses the windows integrated auth and it doesn't ask for any password.
Unfortunately It doesn't still fix the problem for good.
Still some (random) user got the "Password needed " prompt even if the above option is selected.
Exchange 2007 is runnung under Win2k3 X64 SP2.
I'm running Windows Vista SP1 + Office 2007 SP1.
My users are running : XP SP3 + Office 2007 SP1.
Any idea ?