When I open Windows Update in Control Panel, I receive an error code of 8000FFFF
On a Windows Vista-based computer, in Control Panel, you click Check for Updates in the Windows Update item. When you do this, you receive an error code of 8000FFF.
This problem may occur if any of the following values exist in the Windows registry:
For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB946414.