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Report Is Unavailable or Session Has Expired Error Occurs


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


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

An error message that the report is unavailable or that the session has expired error message occurs when using the legacy ASP.NET WebForms ReportViewer.


The legacy ASP.NET WebForms ReportViewer depends on the ASP.NET Session.


If the session expires, refresh the page with the legacy ASP.NET WebForms viewer.

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