Automatic updates help to keep your Windows up-to-date. However, the update feature does not always work smoothly. At times, searching for updates fails with “error code 8000FFFF.”
You can fix this easily. The reason why you are getting this Windows Update error code ist mostly a wrong system clock. You can check your clock settings by double clicking your clock in the right corner of your task bar. Then, open Control Panel and click “Programs and Features”, “View installed updates”. In the appearing window, check whether “Update KB929777” is installed. If the update is missing, you should manually install it—after downloading it from the Microsoft website.
This should fix your Windows Update problem; you will be able to update your operating system with the update feature.