John,
It's the truth that there is no way to bypass inputting
domain\username syntax. The essential is Windows integrated
authentication's logon tickets are generated on clients and IIS
cannot modify anything of them(i.e add the domain prefix) but just
pass them to Domain Controller for auth. Therefore, the
authentication will fail without the domain prefix.
On the other side, for Basic auth(ClearText), IIS can attach the
DefaultLogonDomain value into the user credential.
I think you may take a look at the following KB. Check if it's
possible to make all the conditions be matched which let IE
automatically performs the authentication with IIS and no longe
prompts for username\password.
Internet Explorer May Prompt You for a Password
http://support.microsoft.com/?id=258063
Best regards,
WenJun Zhang
Microsoft Online Support
This posting is provided "AS IS" with no warranties, and confers no
rights.
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www.microsoft.com/security >> Stay informed about: Integrated authentication (NTLM)