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Editorial Team
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Asked: 2026-06-10T05:10:30+00:00

Hi everyone when i publish my website via IIS, I get this error code

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Hi everyone when i publish my website via IIS, I get this error code as you can see at below. Can you help me ?

 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 27:       </assemblies>
    Line 28:     </compilation>
    Line 29:     <authentication mode="Forms">
    Line 30:       <forms loginUrl="~/Account/LogOn" timeout="2880" />
    Line 31:     </authentication>


    Source File: C:\Users\furkan\Desktop\WebCity\webcity\web.config    Line: 29

Then I converted my root dictionary to Application but I get this error

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: Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive.

Source Error: 


Line 17:   <system.web>
Line 18:     <httpRuntime requestValidationMode="2.0" />
Line 19:     <compilation debug="true" targetFramework="4.0">
Line 20:       <assemblies>
Line 21:         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />


Source File: C:\Users\furkan\Desktop\WebCity\WebCity\web.config    Line: 19
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1 Answer

  1. Editorial Team

    The answer to the first issue was this:

    This usually means you have not configured the directory for your website as an application. Open up IIS Manager, find the root directory for your website (where web.config is), right click, and select “Convert to Application”.

    For the new issue, it’s a problem of the .NET version. You either don’t have asp.net 4.0 installed, or you have the application pool set to use the wrong framework. It’s probably the latter, so go to the advanced setting for your site, select the Application Pool setting, and choose an Application Pool called ASP.NET 4.0, or any other that uses the 4.0 framework. If there aren’t any, then you need to install .NET 4.0

    Choosing an app pool:

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