HTML5 Report Viewer throws 405 Error

Environment

Product

Progress® Telerik® Reporting

Description

Upon navigating to the page with the report viewer, the below error is thrown.

Error Message

Failed to load resource: the server responded with a status of 405 (Method Not Allowed)

Possible Causes

• The WebDavModule is used by IIS. The Telerik Reporting REST service requires PUT and DELETE verbs. Those verbs might be blocked by the WebDavModule.
• The Get Clients Session Timeout Seconds endpoint is failing with a status code of 405(Method Not Allowed) due to a greedy route in the routes configuration.

Solutions

Solution 1

To resolve the issue with theWebDavModule, it may be removed from the configuration of the web application (e.g. Web.config)as shown in the following example:

<configuration>
    <system.webServer>
        <modules runAllManagedModulesForAllRequests="true">
            <remove name="WebDAVModule"/>
        </modules>
    </system.webServer>
</configuration>

Solution 2

To resolve the problem when the Get Clients Session Timeout Seconds failing, move the registration of the reporting routes before the default ones, for example:

Telerik.Reporting.Services.WebApi.ReportsControllerConfiguration.RegisterRoutes(config);

config.Routes.MapHttpRoute(
    name: "DefaultApi",
    routeTemplate: "api/{controller}/{action}/{id}",
    defaults: new { id = RouteParameter.Optional }
);