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Asked: 2026-05-11T01:35:51+00:00

I’ve inherited some aspx (including the web.config file) and am getting the following error.

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I’ve inherited some aspx (including the web.config file) and am getting the following error. I’ve created a virtual directory for it but I’m not sure how would I ‘configure it as an application’?

Configuration Error  Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details  below and modify your configuration file appropriately.   Parser Error Message: It is an error to use a section registered as  allowDefinition='MachineToApplication' beyond application level.  This error  can be caused by a virtual directory not being configured as an application  in IIS.  Source Error:    Line 49:             ASP.NET to identify an incoming user.  Line 50:         --> Line 51:        <authentication mode='Windows'/> Line 52:  Line 53:     <customErrors mode='Off'/>   Source File: C:\<MYPATH>\web.config    Line: 51
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  1. Go into the properties of the virtual directory, click the ‘Virtual Directory’ tab and click ‘Create’ button under ‘Application Settings’, then set ‘Execute permissions’ to ‘Scripts only’

    Also check the ASP.NET tab to make sure it is set to the correct version for your app.

    Lastly, make sure the application pool being used for the virtual directory is only used by other sites and virtual directories using the same version of ASP.NET.

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