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Editorial Team
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Asked: 2026-06-12T01:40:56+00:00

I have an application written with a basic HTML/CSS/Javascript front end, and sending AJAX

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I have an application written with a basic HTML/CSS/Javascript front end, and sending AJAX requests using EXTJS to .NET ASHX handlers. One particular request can take a long time to execute, and it appears to be getting cut off at exactly 30 seconds. How do I go about adjusting this timeout value?

Here is what I’ve tried/discovered.

  1. It functions the same in multiple browsers (Chrome, IE, Firefox), so
    I assume it is a configuration on the server side.
  2. I’ve looked through the IIS configuration and found a timeout that appears to be
    for session timeouts and it’s set to 120 (minutes I presume).
  3. The request works fine when a smaller data set is requested, so there
    are no other known programming bugs causing this specific issue.
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1 Answer

  1. Editorial Team

    Some more digging around in the EXTJS documentation shed light on the problem: The default timeout for an EXTJS AJAX request is 30 seconds, and can be overridden with the timeout property. http://dev.sencha.com/deploy/ext-3.3.1/docs/

    Also worth nothing that this stackoverflow question/answer tipped me off. It relates to JQuery but I figured EXTJS couldn’t be much different: Chrome timeout Ajax request after 120 seconds?

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