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Sys.WebForms.PageRequestManagerTimeoutException - The server request timed out - error

Last week I had a problem when I tried to export an image from the AGS 9.2 to a pdf file.

I got this error: “Sys.WebForms.PageRequestManagerTimeoutException The server request timed out” from

the Ajax Extension framework. Its occurred because the export operation was relatively long (something like 2

minutes) and the Ajax Extension Callback framework had a timeout.


How to solve this problem?

To solve this problem we can increase the timeout. You can change the timeout time by adding a new property

to the script manager control. This property is called AsyncPostBackTimeOut and it can help us to define the

number of seconds before the request will throw a request timeout exception*.

For example if you want that the timeout will take maximum 10 minutes your code should be look like this:

<asp:ScriptManager ID=”ScriptManager1″ runat=”server”

AsyncPostBackTimeOut=”600″ >