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Editorial Team
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Asked: 2026-05-15T21:17:30+00:00

I have just installed windows 7 (IIS7.5) on my development system. I was trying

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I have just installed windows 7 (IIS7.5) on my development system. I was trying to run my .NET1.1 web applications on it. I have registered .NET1.1, which created an application pool for ASP.NET1.1. The problem I am facing is, when I try to run my 1.1 website using localhost URL, it gives me error “An unhandled win32 exception occured in w3wp.exe, the just-in-time debugger was launched without necessary security permissions. To debug this process, the just-in-time debugger must be run as an Administrator.”

Process Details, “Process Name: w3wp.exe, UserName: IIS APPPOOL\ASP.NET1.1[Elevated]”

Can someone help me resolving this error?

Thanks

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1 Answer

  1. Editorial Team

    I have resolved the problem. Following URL gives step by step instructions for installing and enabling the .NET1.1 on IIS7. Things are little bit different on windows7 but almost similar.

    http://learn.iis.net/page.aspx/472/how-to-install-aspnet-11-with-iis7-on-vista-and-windows-2008/

    The main part is installation of .NET Framework Version 1.1 Service Pack 1
    and then installation of ASP.NET Security Update for .NET Framework 1.1 SP1

    It resolved my problem as defined in the question of this thread.

    Thanks everyone

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