Article ID: 946414 - View products that this article applies to.
Fix this problemNow, go to the Did this fix the problem? section.
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Note This wizard may be only in English. However, the automatic fix also works for other language versions of Windows.
Note If you are not using the computer that has the problem, you can save the automatic fix to a flash drive or to a CD and then run the fix on the computer that has the problem.
Note If you would rather fix this problem yourself, go to the "Let me fix it myself" section.
When you download updates on a Windows Vista-based computer by using Windows Update or Microsoft Update, you may receive error code 0x8000FFFF. You may also encounter this error when you launch Windows Update from the Control Panel.
This problem may occur if any of the following values exist in the Windows registry:
To resolve this issue, try the following methods in the order in w hich they are listed.
Method 1: Restart your computer, and then try to install the updates againClose all programs that are running, restart your computer, and then try to install the updates.
Note Restarting the computer will make sure that all previous installations have completed and that there are no remaining processes that require a system restart before they can be completed.
If the issue is not resolved, go to Method 2.
Method 2: Back up and then remove the registry keys that may be causing the issueImportant This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756To use Registry Editor to back up and then delete the registry values that are listed in the "Error message description " section, follow these steps.
(http://support.microsoft.com/kb/322756/ )How to back up and restore the registry in Windows
Note These steps are known to resolve this problem that is described in the "Error message description" section. These steps may not resolve the problem if you receive error code 8000FFFF in a scenario that differs from the one that is described in the "Error message description" section.
Try to download updates. If you no longer receive an error code, and the computer downloads updates correctly, the problem is fixed, and you are finished with this article. If the problem is not fixed, you can contact support
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(mailto:firstname.lastname@example.org?Subject=KB946414 - Error when you download updates using Windows Update or Microsoft Update: 8000FFFF)message.
Note Steps 6 through 8 of method 2 in the "Let me fix it myself" section back up the following registry key to the file Components.reg on your desktop:
These keys are written by the Windows Modules Installer service, TrustedInstaller.exe, when a package that requires restart is being installed.
In some cases, problems such as power loss or registry corruption can put these values in an inconsistent state that can prevent a client of TrustedInstaller (like the Windows Features screen) from functioning properly.
Deleting these values has no known side effects. However, we strongly recommend that you back up these registry values before you delete them.
This resolution is known to fix the following problems:
Article ID: 946414 - Last Review: June 10, 2014 - Revision: 12.0