This information applies to Windows 7 with Service Pack 1 (SP1), Windows Server 2008 R2 with SP1, Windows 7, Windows Server 2008 R2, Windows Vista, Windows XP with SP2, and Windows Server 2003.
If you receive Windows update error 8007f0f4 or FFFFFFFF, it means that an important update can't be installed because of a problem on your computer.
The problem is usually caused by a malware (malicious software) infection on your computer. To prevent the computer from becoming unstable, Windows won't install the update.
We recommend that you install and run an antivirus program on your computer, remove any malware, and then install the important update.
Some antivirus programs are sold with annual subscriptions that can be renewed as needed, but many programs are also available for free. Microsoft offers Microsoft Security Essentials, a free antivirus program you can download from the Microsoft Security Essentials
website. You can also visit the Windows security software providers
website to find a third-party antivirus program.
For information about detecting and removing malware, see the Error code when you install security update 977165 article on the Microsoft website.
Error codes this applies to: