The remote server returned an error: (401) Unauthorized

[towpse]

Might anyone be able to suggest why I am geting this error when I host my web application in IIS?
If I use the Visual Studio Dev server, the page loads with a scheduler.
All I do is create a virtual directory for my app in IIS and I get the following error...

Any hep would be greatly appreciated. Thanks.

The remote server returned an error: (401) Unauthorized.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Net.WebException: The remote server returned an error: (401) Unauthorized.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[WebException: The remote server returned an error: (401) Unauthorized.] System.Net.WebClient.UploadDataInternal(Uri address, String method, Byte[] data, WebRequest& request) +302 System.Net.WebClient.UploadString(Uri address, String method, String data) +170 System.Net.WebClient.UploadString(String address, String method, String data) +35 Telerik.Web.UI.SchedulerWebServiceClient.GetResources() +460 [Exception: An error occurred while requesting resources from the web service. Server responded with: {"Message":"Authentication failed.","StackTrace":null,"ExceptionType":"System.InvalidOperationException"}] Telerik.Web.UI.SchedulerWebServiceClient.GetResources() +622 Telerik.Web.UI.RadScheduler.BindResourcesFromWebService() +95 Telerik.Web.UI.RadScheduler.PerformSelect() +122 System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +73 Telerik.Web.UI.RadScheduler.EnsureDataBound() +51 Telerik.Web.UI.RadScheduler.CreateChildControls(Boolean bindFromDataSource) +63 Telerik.Web.UI.RadScheduler.CreateChildControls() +10 System.Web.UI.Control.EnsureChildControls() +87 System.Web.UI.Control.PreRenderRecursiveInternal() +44 System.Web.UI.Control.PreRenderRecursiveInternal() +171 System.Web.UI.Control.PreRenderRecursiveInternal() +171 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +842

        <telerik:RadScheduler    ID="RadScheduler1"
                                            runat="server"
                                            Height=""
                                            HoursPanelTimeFormat="htt"
                                            ValidationGroup="RadScheduler1"
                                            StartEditingInAdvancedForm="false"
                                            Skin="Office2007">
            <WebServiceSettings Path="SchedulerWebService.asmx" ResourcePopulationMode="ServerSide" />
        </telerik:RadScheduler>

[Mike Taylor]

If you use authentication, maybe this helps you:
http://www.telerik.com/help/aspnet-ajax/scheduler-authentication-resourcepopulationmode.html

[towpse]

perfect. somehow didn't stumble on that article.

thanks!

[towpse]

seems to be the answer but i'm running into that issue once again.

is there anything else to investigate or debug?

[Landon]

Did anyone ever get an answer for this? The initial response, marked as "answer", worked for a while, but now has stopped working, and I'm desperate! Any thoughts?

[Landon]

Hello, is anybody out there? The fix listed is STILL not working for me! Does anyone have any idea how to fix it??

[Ivana]

Hi,

You can check for the steps explained in the following ASP.NET forum:
http://forums.asp.net/t/1165237.aspx/1.

Greetings,
Ivana
the Telerik team

[Nelson]

I am also running into issues with web service binding and 401 Unauthorized errors when using ServerSide Resource Population.

My current development environment is set up to use a local instance of full IIS on my Windows 7 machine (not IIS Express). I have enabled at the site root both anonymous access configured with IUSR as well as Windows Authentication to enable debugging. We do use cookies for authentication but do not integrate with ASP.NET authentication and failure to authenticate in code does not return a 401, but rather a redirect to another page. Based on this, I'm sure the issue is not our websites cookiebased authentication but rather having enabled Windows Authentication and somehow it fails as this will definitely cause a 401.

Any advice on how I may pass through my current credentials?

[Plamen]

Hi Nelson,

 
We are not aware and have not been reported of another known settings that may be causing such error out of the box so it may be caused by some custom setting. If you are still observing the issue please if you find out more information  about it.

Regards,
Plamen
the Telerik team