The Old ASP.NET Webforms ReportViewer Does Not Display Reports after Refresh

Environment

Product	Progress® Telerik® Reporting
Version	Q2 2012 and later
Report Viewers	Legacy ASP.NET WebForms Viewer

Description

The described scenario and suggested solution relate to the legacy ASP.NET WebForms ReportViewer. It is recommended that you migrate to the HTML5 ReportViewer.

The old ASP.NET WebForms ReportViewer does not display reports after refresh.

Cause

The old ASP.NET WebForms ReportViewer displays content delivered by its Telerik.ReportViewer.axd handler.

Solution

To solve the issue, try the following approaches:

• Verify that the Telerik.ReportViewer.axd handler is registered in both the system.Web and system.webServer sections.

• Make sure that the viewer is added in a valid AJAX scenario.

• If you are using Visual Studio 2013 or later, disable the BrowserLink feature.