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

Adding two of the config settings mentioned above did the trick for me.

In the web.config for the site set the executionTimeout = "10800":

In the Site.Master set AsyncPostBackTimeout="56000":