Sharepoint 2007 requires multiple logins

[JEngles]

We have recently just merged with 10 companies and have set up a trust between all the domain's which seems to be working. Just recently though we have launched Sharepoint 2007, but we have a problem. When a user from outside the company that is hosting the server tries to access an office file (e.g Excel) they are prompted for a username and password. You can cancel this and the file opens fine anyway, but even if you enter your name and password it will be prompted again in the next session.

Clients are using Windows XP SP3, Office 2003 SP3 and IE7.

Any light you can shine on this problem would be much appreciated.

Cheers,
Johan

 

[PatricktheAnalyst]

I have some thoughts on this here:

http://sharepointglobal.blogspot.com/2009/04/implementing-help-desk-configuring.html

Patrick

http://sharepointglobal.blogspot.com/