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Suddenly one of the InfoPath forms on my company's Sharepoint site has stopped working. The log has the following message:

Form render failed because the user's session was closed StackTrace:
at Microsoft.Office.InfoPath.Server.Controls.XmlFormView.RenderForm(HtmlTextWriter writer) at Microsoft.Office.InfoPath.Server.Controls.XmlFormView.RenderContents(HtmlTextWriter writer) at System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer)
at Microsoft.Office.InfoPath.Server.Controls.XmlFormView.RenderControl(HtmlTextWriter writer) at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) at Microsoft.Office.InfoPath.Server.Controls.WebUI.BrowserFormWebPart.RenderWebPart(HtmlTextWriter output) at Microsoft.SharePoint.WebPartPages.WebPart.Render(HtmlTextWriter writer) at Microsoft.SharePoint.WebPartPages.SPChrome.RenderPartContents(HtmlTextWriter output, WebPart part) at Microsoft.SharePoint.WebPartPages.SPChrome.RenderWebPart(HtmlTextWriter output, WebPart part) at Microsoft.SharePoint.WebPartPages.WebPartZone.RenderZoneCell(HtmlTextWriter output, Boolean bMoreParts, WebPart part) at Microsoft.SharePoint.WebControls.WebPartInFieldHelper.RenderHtmlWithWebParts(HtmlTextWriter output, SPChunkedStringBuffer bufHtml) at Microsoft.SharePoint.WebControls.RichTextField.RenderFieldForDisplay(HtmlTextWriter output) at Microsoft.SharePoint.WebControls.BaseFieldControl.Render(HtmlTextWriter output) at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) at Microsoft.SharePoint.WebControls.FormField.Render(HtmlTextWriter output) at Microsoft.SharePoint.WebControls.EmbeddedFormField.Render(HtmlTextWriter output) at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) at System.Web.UI.UpdatePanel.RenderChildren(HtmlTextWriter writer)
at System.Web.UI.UpdatePanel.Render(HtmlTextWriter writer) at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) at System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) at System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) at System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output)
at System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) at System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) at System.Web.UI.Page.Render(HtmlTextWriter writer) at Microsoft.SharePoint.WebPartPages.WikiEditPage.Render(HtmlTextWriter writer) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) at System.Web.HttpApplication.PipelineStepManager.ResumeSteps(Exception error) at System.Web.HttpApplication.BeginProcessRequestNotification(HttpContext context, AsyncCallback cb) at System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) at System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags) at System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags) at System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags) at System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)

I Googled the error "Form render failed because the user's session was closed" and it actually returned ZERO results.

Can anyone shed any light?

share|improve this question
    
Is this when viewing an existing form or submitting a new one, or both? – John Chapman Feb 28 '13 at 17:08
    
Viewing an existing one (could be both but not tried making a new one) – Pandy Legend Mar 4 '13 at 8:05

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