ReportViewer timeouts in spite of timeout settings

Question

I have an ASP.NET app that exposes a Microsoft ReportViewer (actually an MVC3 app with one WebForm hosting the ReportViewer). When running large reports, a timeout occurs causi

Answer 1

set the AsyncPostBackTimeOut="" value in script manager

for more detail http://msdn.microsoft.com/en-us/library/system.web.ui.scriptmanager.asyncpostbacktimeout.aspx