HTTP 404.2 Error ISAPI/CGI Restrictions Stopping .NET Framework 4.5.1

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Error

An HTTP 404.2 error code is received when ISAPI/CGI Restrictions are preventing the.NET Framework 4.5.1 from running.

Resolution

  1. Open Internet Information Services.

  2. Select the Server in the left tree view.

  3. In the IIS section, open ISAPI and CGI Restrictions.

  4. For all items beginning with ASP.NET v4.0, right-click the item and select Allow.