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Error: ASP.NET Not Installed

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This error occurs when ASP.NET is not installed correctly on the computer that you are trying to debug. This might mean that ASP.NET was never installed or that ASP.NET was installed first and IIS was installed later.

The following procedure describes how to install ASP.NET using aspnet_regiis.exe for ASP.NET 4.0 and earlier versions.

You can't install or uninstall ASP.NET 4.5 or later versions on Microsoft Windows 8 or Windows Server 2012 by using aspnet_regiis.exe. For more information, see Install ASP.NET 4.5 in Windows 8 and Windows Server 2012

Note

For ASP.NET Core, see Install the ASP.NET Core Module/Hosting Bundle.

To reinstall ASP.NET

  1. From a command prompt window, run the following command:

    \WINDOWS\Microsoft.NET\Framework\version\aspnet_regiis -i

    where version represents the version number of the .NET Framework installed on your computer, such as v1.0.370. You can determine the framework version by looking in the \WINDOWS\Microsoft.NET\Framework directory.

See also