Microsoft small business knowledge base

Article ID: 917499 - Last Review: June 6, 2014 - Revision: 2.0


When you try to install the Windows Genuine Advantage (WGA) Validation Tool to validate Microsoft Windows XP or Microsoft Windows 2000 Professional, you cannot validate successfully. Additionally, you receive the following error message:


This problem occurs because the appropriate permissions are not detected.


To resolve this problem, visit the following Microsoft Web site to download and install the WGA Diagnostic Tool: (
For more information about permissions problems that may occur when you try to run Windows Update, click the following article number to view the article in the Microsoft Knowledge Base:
910338  ( ) Error message when you visit the Windows Update Web site or the Microsoft Update Web site: "0x800A0046"

Applies to
  • Microsoft Windows Genuine Advantage
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Home Edition
  • Microsoft Windows 2000 Professional Edition
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