You can update the Windows applications or programs by using the automatic Windows update service or Microsoft update sites. These services provide you the latest and the compatible updates for your Windows computer if you are connected with the internet. But sometimes when you try to install any updates using automatic Windows update service, you will see a very critical error issue Windows update error 0x80240439 in your computer. After the occurring of this error, you will not be able to work on the computer properly. The error may come to you mainly due to incorrect registry entries or due to miscommunication between the computer and the automatic Windows update service. You can fix the problem using some manual methods or you can also rectify the problem automatically using Advanced System Repair tool.