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Home/ Questions/Q 485345
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Editorial Team
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Editorial Team
Asked: May 13, 20262026-05-13T01:23:32+00:00 2026-05-13T01:23:32+00:00

I am having trouble upgrading my current project to use RIA Services. I added

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I am having trouble upgrading my current project to use RIA Services. I added all the necessary web.config changes but still no luck. I everything compiles fine but when I hit the page using the datacontext I get an error. I debugged with fiddler and I’m getting a 404 on one of the request. I am getting back headers in my grid so some communication is happening but no data is actually coming through. Another thing to note is that my MVC is running windows authentication. I do have a clientaccesspolicy.xml as well.

Error in Silverlight with Headers but no data,
alt text

Response from Fiddler:

[HttpException]: The controller for
path
‘/Services/EpicWeb-Services-LegacyDomainService.svc/binary’
was not found or does not implement
IController. at
System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(RequestContext
requestContext, Type controllerType)
at
System.Web.Mvc.DefaultControllerFactory.CreateController(RequestContext
requestContext, String controllerName)
at
System.Web.Mvc.MvcHandler.ProcessRequest(HttpContextBase
httpContext) at
System.Web.Mvc.MvcHandler.ProcessRequest(HttpContext
httpContext) at
System.Web.Mvc.MvcHandler.System.Web.IHttpHandler.ProcessRequest(HttpContext
httpContext) at
System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at
System.Web.HttpApplication.ExecuteStep(IExecutionStep
step, Boolean& completedSynchronously)

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1 Answer

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  1. Editorial Team
    Editorial Team
    2026-05-13T01:23:32+00:00Added an answer on May 13, 2026 at 1:23 am

    Looks like all I needed was an IgnoreRoute.
    First attempt was a typo.

    routes.IgnoreRoute("{*allsvc}", new { allsvc = @".*\.svc(/.*)?" }); 
    
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