JSI Tip 8650. How do I troubleshoot WMI-related issues in Windows XP SP2?

Microsoft Knowledge Base Article 875605 contains the following summary:

A number of security lockdown changes in Microsoft Windows XP Service Pack 2 (SP2) may cause problems with Windows Management Instrumentation (WMI), especially in remote scenarios. For example, Windows Firewall is enabled by default in Windows XP SP2. Also, DCOM restrictions in Windows XP SP2 are different from DCOM restrictions in earlier versions of Windows.

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