I have a Silverlight application (using MVC) and when i\'m building in visual studio, using Visual Studio Development center, there\'s no problem, the HttpContext.Curr
HttpContext.Curr
The browser will only detect your username if the IIS server is on the same domain and the security settings within your group policy allow it.
Otherwise you will have to provide it with credentials, but if it is not on the same domain, it will not be able to authenticate you.