Windows – Why isn’t Windows Update completing an installation

1. Open your Windows Update under Start -> All Programs.
2. Look at your Update-History. There should be one Update failing each time. Double click it.
3. In that window that pops up, there is a link that looks like http://support.microsoft.com/kb/anyKbNumber. Click that link.
4. The download-page for this update opens. Download it and install it manually (don't forget to right-click it and choose "Run as Administrator")

Manually installing an update is often the solution for stucking updates.
If that update is Win 7 SP1 you SHOULD install it manually to prevent breaking your system if you have had problems with it (SP1 crashed a few PCs over here).

If manually installing that update doesn't work, tell us your error-description (if any).

The error 8024200d means WU_E_UH_NEEDANOTHERDOWNLOAD (The update handler did not install the update because it needs to be downloaded again.)

Download and install the Update with the help of the MSU file from the downloadcenter, instead of using Windows Update.