I'm using Infragistics 19.2 version DLL's and I have a requirement of importing large files sizing up to 2 GB. Here, I'm using WebUpload control with browser IE 11.

Issue Scenario: 

when I'm trying to upload the file, the progress bar is showing up and I can see the real-time progress being displayed properly but very soon the import process goes to halt exactly after running for 2 mins and this causes the import process to stop in the middle and nothing happens. I wonder why there is no question regarding this issue in the forum. I just wanted to know whether I missed something or something I did not notice.  Below is the design of my sample page along with the Web. Config section.

Design

=====

<ig:WebScriptManager ID="WebScriptManager1" runat="server"></ig:WebScriptManager>
<ig:WebUpload ID="WebUpload1" runat="server" Width="800px" AutoStartUpload="true" UploadUrl="@\\XYZURL\QA" MaxFileSize="2147483647" Mode="Single" ProgressUrl="IGUploadStatusHandler.ashx"></ig:WebUpload>

Web.Config

=========

<system.web>
<httpRuntime executionTimeout= "3600" maxRequestLength="2147483647" targetFramework="4.7"/>

</system.web>

<system.webServer>
<validation validateIntegratedModeConfiguration="false"/>
<!-- Web Upload-->
<modules runAllManagedModulesForAllRequests="true">
<add name="TestModule" type="Infragistics.Web.UI.EditorControls.UploadModule" preCondition="managedHandler"/>
</modules>
<handlers>
<add name="UploadStatusHandler" path="/DR/IGUploadStatusHandler.ashx" verb="*" type="Infragistics.Web.UI.EditorControls.UploadStatusHandler" preCondition="integratedMode"/>
</handlers>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="2147483647"/>
</requestFiltering>
</security>
<!-- //Web Upload-->
</system.webServer>

 Let me know what exactly I'm missing.