>Has anyone succeeded in getting the REMOTE_USER HTTP value when using Challenge/Response?

Michel,

My understanding is that you cannot do this. At least with IIS 3.0 and earlier, using Web Connection you couldn't get the user name when using C/R. I'm not sure if this has changed in IIS 4.0 (or will change in NT 5). It might be unacceptable for some security reason I'm unaware of.

Randy