troubleshooting Question

Registry Key Permissions (Cannot open Windows: error while opening key)

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ptsolutionsincFlag for United States of America asked on
Microsoft Legacy OSWindows XP
5 Comments1 Solution1665 ViewsLast Modified:
I just removed several viruses from my customers computer (Windows XP SP3).  I am now trying to uninstall AVG 9 so we can install AVG 2011.  During the uninstall process, it fails stating it does not have access to the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows.

When navigating to the key manually, I get the following error.  Cannot open Windows: error while opening key)

I have tried changing the permissions and owner but get the following error.  Unable to set new owner on Windows.  Access is denied.

Any ideas how i can fix this?
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