On Feb 6, 11:36*am, D|an-0 wrote:
Environment: Outlook 2003, Exchange 2003, Single Domain,

Periodically, I get a prompt to enter my login credentials when opening
outlook. *I've been using this network for at least 2 years, and this
has never happened. Furthermore, this issue is not happening to
everyone. I believe I've received this complaint from one other person
about six months ago. Any ideas?

Thanks,

d|ano

I have had this is before and it is usually because it can't find the
domain information after it gets interupted and it thinks it is
offline. After it is offline it sometimes loses the authentication so
you have to enter in the username as DOMAIN\USERNAME instead of just
the user name.