2K3 Cannot creat users

[Owyn]

Heya.

I have installed a Windows 2003 Server Enterprise, and the Active Directory. I have installed other server on, like Exchange 2003, SQL 2000 and ISA Server 2000.

But now, when I want to create an user, or just want to reset the password from an existing user, I have an error :

Windows cannot complete the password change for User because : The network location cannot be reached. For information about network troubleshooting, see Windows help.

I don't see anything about reset password and network problem on active directory in Windows help.

So, if someone have any ideas on my problem, i'll be happy !

Thank for advance.

Owyn.