authentication problem
I was asked to help solve a problem with accessing contents that requires authentication on a windows website.It turns out that only IE users can go through the authentication box, and not all IE users can use it.
Unlike the more common authentication box that includes a username field and a password field, this one also has a domain field.
Why can only some users use this box successfuly (all have the IE same version)? What can/should be done by others in order to be able to use it?

