SYMPTOM:
When accessing the Strategy Web 9.x hosted by the Internet Information Services the following error message is presented:

Sample Code/Error
The XML page cannot be displayed
Cannot view XML input using XSL style sheet. Please correct the error and then click the Refresh button, or try again later.
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A name was started with an invalid character. Error processing resource
'http://localhost/MicroStrategy/asp/'. Line 1...
<%@ Page Language="vb" AutoEventWireup="false"
Inherits="Strategy.Main" validateRequest="false"
CodeFile="Main.aspx....
CAUSE:
After installing the Microsoft .NET Framework Software Development Kit (SDK) or Microsoft Visual Studio .NET, the Microsoft Internet Information Services (IIS) mappings are created to associate new file name extensions and new settings for ASP.NET.
The new settings are not in place if either of the following statements apply to:
ACTION:
Follow the steps below in order to run the Aspnet_regiis.exe utility to fix the IIS mappings for ASP.NET :
Observation: In this path, version represents the version number of the .NET Framework installed on server, so the placeholder must be replaced with the actual version number when typing the command.