When you try to install Microsoft Windows Live OneCare, you receive the following error message that has the error code 0019-80070643:
OneCare installation could not complete. One or more components of Windows Live OneCare did not install successfully.
The Firewall component of OneCare was not installed correctly. This problem may have happened because a previous installation of the OneCare Firewall is corrupted or because Microsoft Windows XP system files are damaged.
More information available at Microsoft
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