I am using Avanade ACA web services which I guess uses .net web
services under the wraps. My requirement is use windows authentication
and allow user identity to pass thru to the web service and then to a
database.

I have two websites in the same box - one is the UI and other is the
webservices. It works when I have anonymous clicked on in the
webservices but it does not work when I switch this off and windows
authentication on. It throws the exception - system.net.webexception
401 Unathorrized.

I have tried using
<system.net>
<defaultProxy useDefaultCredentials="true">
<system.net>

in the web services but with no success. I have also given all
permissions to the Network Service (default app pool identity) for the
file system for the web site.

Now this looks like a common problem with .net web services and I am
not sure what else I can try.

Anyone done this before or have some idea?

Thanks in advance

Kishan