When you try to download updates from Windows Update on a computer that is running Windows Vista, you may receive an error message that resembles the following:

Error 0×80070003
The system cannot find the path specified.

Additionally, an entry that resembles the following may be logged in the WindowsUpdate.log file:

2007-03-17 12:14:47:639 6128 a54 Handler Post-reboot
		  status for package Package_for_KBxxxxx~31bf3856ad364e35~x86~~6.0.1.2:
		  0x80070003. 2007-03-17 12:14:47:639 6128 a54 Handler WARNING: Got
		  extended error: "POQ Operation LoadDefaultUserHive"

Note: The WindowsUpdate.log file is in the following location:

%Windir%\WindowsUpdate.log

Note: The entry in the WindowsUpdate.log file references an extended error that occurs when the system tries to load the Default User Hive.