Windows Update error 8000FFFF
If you receive Windows Update error 8000FFFF, it means that there are Windowsregistry values that are blocking the update from being downloaded and installed.
You can run a troubleshooter that will automatically find and fix some common problems with Windows Update, or fix the problem manually.
To fix this problem automatically
Click this button:
Fix this problem
In the File Download dialog box, click Run, and then follow the steps in the wizard.
To fix this problem manually
The following steps show how to remove the registry values that, if present, can block Windows Update from working correctly. If these values are not present, these steps will not help.
These steps are intended for advanced users. If you are not comfortable changing registry settings, use the automatic method described above, or ask someone for assistance. Modifying the registry incorrectly can cause additional problems. For more information, see Back up the registry.
Open the Registry Editor by clicking the Start button , typing regedit into the Search box, and then pressing ENTER.
If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
In the left pane, find and double-click HKEY_LOCAL_MACHINE, and then click COMPONENTS.
Right-click COMPONENTS, and then click Export. By default, this file is saved to your desktop, but you can choose any folder.
In the File Name text box, type COMPONENTS. You have now created a back up copy of the registry values you're going to be removing.
In the right pane, search for PendingXmlIdentifier, right-click it, and then click Delete. PendingXmlIdentifier might not be listed.
In the right pane, search for NextQueueEntryIndex, right-click it, and then click Delete. NextQueueEntryIndex might not be listed.
In the right pane, search for AdvancedInstallersNeedResolving, right-click it, and then click Delete. AdvancedInstallersNeedResolving might not be listed.
Restart your computer and then run Windows Update again.
If you need to restore the registry values you modified, double-click the COMPONENTS.reg file on your desktop, and then follow the steps.
If you are prompted for an administrator password or confirmation, type the password or provide confirmation. You can delete this file once you are finished with it.
If you continue to see this error, see this automatic troubleshooter
on the Microsoft Support website, or go to the Microsoft Answers
website for more assistance.
Error codes this applies to: