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Editorial Team
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Asked: 2026-06-05T15:43:04+00:00

I am working on an asp.net application which errors only during the first time

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I am working on an asp.net application which errors only during the first time running the app. The error message is {“Response is not available in this context.”} and the app breaks in the global.asax.cs page in Application_Error function.

The stack trace value is: at System.Web.HttpApplication.get_Response()
at pcMDnet.Global.Application_Error(Object sender, EventArgs e) in C:\BuildDir\1.0.1.05\GIS\pcMDnet\Global.asax.cs:line 364
at System.Web.HttpApplication.RaiseOnError()

How can I debug this issue?

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1 Answer

  1. Editorial Team

    This error is due to a design change in the IIS7 Integrated pipeline that makes the request context unavailable in Application_Start event.

    To solve it ether remove the reference on the content at that point, or make one time initialization on Application_BeginRequest where the content exist.

    reference: http://mvolo.com/iis7-integrated-mode-request-is-not-available-in-this-context-exception-in-applicationstart

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