Try the following, IAW the Windows Update Troubleshooter
http://v4.windowsupdate.microsoft.co...ndows%20Update
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Problem Description:
On the web site you will see that updates have failed to install. If you
check the Windows Update.log file, you will see an error similar to this:
Error IUENGINE See iuhist.xml for details: Install finished (Error
0x80070005: Access is denied.)
Resolutions:
Suggestion 1:
This error can occur if you have mapped network drives configured and you
don't have the correct permissions to access them. Try disconnecting all
mapped network drives and then try accessing the Windows Update site and see
if the installs still fail.
Suggestion 2:
If you are using the NTFS file system on your hard drive(s) then try these
steps.
Check permissions on the C:\WUTemp folder (if you have more than one hard
drive, check this folder on each drive).
1. Open Windows Explorer.
2. Navigate to the C:\WUTemp folder.
3. Right-click on the folder name and select Properties from the popup menu.
4. Click on the Security tab.
5. Set Full Control access for the following accounts:
Users
Power Users
Administrators
6. Click Apply, then OK.
7. Now try accessing the Windows Update site.
Suggestion 3:
1. Click on Start, Run and type "REGEDIT" (w/o the quotes). The Registry
Editor will open.
*WARNING*
Using Registry Editor incorrectly can cause serious problems that may
require you to reinstall your operating system. Microsoft cannot guarantee
that problems
resulting from the incorrect use of Registry Editor can be solved. Use
Registry Editor at your own risk.
2. Navigate to the following key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\WindowsUpdate
3. On the upper menu, click on Edit, and select Permissions from the
drop-down list.
4. Give Administrator (And / Or System) Full Control and Read permissions
by checking the allow boxes. NOTE: In certain instances these boxes are
grayed out. Insure that all accounts have appropriate permissions.
5. Click Apply, then OK.
6. Close the Registry Editor.
7. If you had to make any changes, then try the Windows Update site and see
if the error persists.
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I hope this helps. Arionly