When you get the Windows update error 0x80004003 in your computer, you will not be able to update the Windows anyhow. After the occurring of this issue, all the applications and programs get stuck and unable to give you any service. The situation is very critical and you get it usually due to wrong registry files or due to problem with the Windows system files. It also comes to you due to virus infections in the computer. In this situation, you should go through error troubleshooting procedures given here in the article. You can also download the Advanced System Repair tool in the computer to fix Windows error 0x80004003 automatically.