Microsoft KB Archive/821401

= &quot;Error 0x80090006&quot; When You Restart Windows XP After You Restore Your Computer from Backup =

PSS ID Number: 821401

Article Last Modified on 6/13/2003

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The information in this article applies to:


 * Microsoft Windows XP Professional

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SYMPTOMS
When you restart your computer after you restore Windows XP from backup, you may receive the following error message:

A problem is preventing windows from accurately checking the license for this computer. ERROR 0x80090006



CAUSE
This issue may occur if you replace a hard disk, and then restore Windows XP to the new hard disk from a backup. When you restore Windows XP to a new hard disk, the hardware ID for the restored Windows XP computer changes. The new hardware ID prevents the computer from verifying the license correctly because the hardware hash no longer matches the hardware hash that was used for the original product activation.



RESOLUTION
To resolve this issue, after you restore the computer from a backup, perform an in-place upgrade of Windows XP, and then reactivate the Windows XP license.



MORE INFORMATION
For additional information about how to restore files to your hard disk in Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:

309340 HOW TO: Use Backup to Restore Files and Folders on Your Computer in Windows XP

For additional information about how to perform an in-place upgrade of Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:

315341 How to Perform an In-Place Upgrade (Reinstallation) of Windows XP

For additional information about Microsoft product activation, visit the following Microsoft Web site:

http://www.microsoft.com/piracy/basics/activation/mpafaq.asp

Keywords: kbprb KB821401

Technology: kbWinXPPro kbWinXPProSearch kbWinXPSearch

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